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struct.AllocatedStackMemory.html
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="API documentation for the Rust `AllocatedStackMemory` struct in crate `alloc_no_stdlib`."><title>AllocatedStackMemory in alloc_no_stdlib - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-46132b98.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="alloc_no_stdlib" data-themes="" data-resource-suffix="" data-rustdoc-version="1.85.0 (4d91de4e4 2025-02-17)" data-channel="1.85.0" data-search-js="search-75f5ac3e.js" data-settings-js="settings-0f613d39.js" ><script src="../static.files/storage-59e33391.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../alloc_no_stdlib/index.html">alloc_<wbr>no_<wbr>stdlib</a><span class="version">2.0.4</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Allocated<wbr>Stack<wbr>Memory</a></h2><h3><a href="#fields">Fields</a></h3><ul class="block structfield"><li><a href="#structfield.mem" title="mem">mem</a></li></ul><h3><a href="#deref-methods-%5BT%5D">Methods from Deref<<wbr>Target=[<wbr>T]></a></h3><ul class="block deref-methods"><li><a href="#method.align_to" title="align_to">align_to</a></li><li><a href="#method.align_to_mut" title="align_to_mut">align_to_mut</a></li><li><a href="#method.array_chunks" title="array_chunks">array_chunks</a></li><li><a href="#method.array_chunks_mut" title="array_chunks_mut">array_chunks_mut</a></li><li><a href="#method.array_windows" title="array_windows">array_windows</a></li><li><a href="#method.as_array" title="as_array">as_array</a></li><li><a href="#method.as_ascii" title="as_ascii">as_ascii</a></li><li><a href="#method.as_ascii_unchecked" title="as_ascii_unchecked">as_ascii_unchecked</a></li><li><a href="#method.as_bytes" title="as_bytes">as_bytes</a></li><li><a href="#method.as_chunks" title="as_chunks">as_chunks</a></li><li><a href="#method.as_chunks_mut" title="as_chunks_mut">as_chunks_mut</a></li><li><a href="#method.as_chunks_unchecked" title="as_chunks_unchecked">as_chunks_unchecked</a></li><li><a href="#method.as_chunks_unchecked_mut" title="as_chunks_unchecked_mut">as_chunks_unchecked_mut</a></li><li><a href="#method.as_flattened" title="as_flattened">as_flattened</a></li><li><a href="#method.as_flattened_mut" title="as_flattened_mut">as_flattened_mut</a></li><li><a href="#method.as_mut_array" title="as_mut_array">as_mut_array</a></li><li><a href="#method.as_mut_ptr" title="as_mut_ptr">as_mut_ptr</a></li><li><a href="#method.as_mut_ptr_range" title="as_mut_ptr_range">as_mut_ptr_range</a></li><li><a href="#method.as_ptr" title="as_ptr">as_ptr</a></li><li><a href="#method.as_ptr_range" title="as_ptr_range">as_ptr_range</a></li><li><a href="#method.as_rchunks" title="as_rchunks">as_rchunks</a></li><li><a href="#method.as_rchunks_mut" title="as_rchunks_mut">as_rchunks_mut</a></li><li><a href="#method.as_simd" title="as_simd">as_simd</a></li><li><a href="#method.as_simd_mut" title="as_simd_mut">as_simd_mut</a></li><li><a href="#method.as_str" title="as_str">as_str</a></li><li><a href="#method.binary_search" title="binary_search">binary_search</a></li><li><a href="#method.binary_search_by" title="binary_search_by">binary_search_by</a></li><li><a href="#method.binary_search_by_key" title="binary_search_by_key">binary_search_by_key</a></li><li><a href="#method.chunk_by" title="chunk_by">chunk_by</a></li><li><a href="#method.chunk_by_mut" title="chunk_by_mut">chunk_by_mut</a></li><li><a href="#method.chunks" title="chunks">chunks</a></li><li><a href="#method.chunks_exact" title="chunks_exact">chunks_exact</a></li><li><a href="#method.chunks_exact_mut" title="chunks_exact_mut">chunks_exact_mut</a></li><li><a href="#method.chunks_mut" title="chunks_mut">chunks_mut</a></li><li><a href="#method.clone_from_slice" title="clone_from_slice">clone_from_slice</a></li><li><a href="#method.contains" title="contains">contains</a></li><li><a href="#method.copy_from_slice" title="copy_from_slice">copy_from_slice</a></li><li><a href="#method.copy_within" title="copy_within">copy_within</a></li><li><a href="#method.element_offset" title="element_offset">element_offset</a></li><li><a href="#method.ends_with" title="ends_with">ends_with</a></li><li><a href="#method.eq_ignore_ascii_case" title="eq_ignore_ascii_case">eq_ignore_ascii_case</a></li><li><a href="#method.escape_ascii" title="escape_ascii">escape_ascii</a></li><li><a href="#method.fill" title="fill">fill</a></li><li><a href="#method.fill_with" title="fill_with">fill_with</a></li><li><a href="#method.first" title="first">first</a></li><li><a href="#method.first_chunk" title="first_chunk">first_chunk</a></li><li><a href="#method.first_chunk_mut" title="first_chunk_mut">first_chunk_mut</a></li><li><a href="#method.first_mut" title="first_mut">first_mut</a></li><li><a href="#method.get" title="get">get</a></li><li><a href="#method.get_many_mut" title="get_many_mut">get_many_mut</a></li><li><a href="#method.get_many_unchecked_mut" title="get_many_unchecked_mut">get_many_unchecked_mut</a></li><li><a href="#method.get_mut" title="get_mut">get_mut</a></li><li><a href="#method.get_unchecked" title="get_unchecked">get_unchecked</a></li><li><a href="#method.get_unchecked_mut" title="get_unchecked_mut">get_unchecked_mut</a></li><li><a href="#method.is_ascii" title="is_ascii">is_ascii</a></li><li><a href="#method.is_empty" title="is_empty">is_empty</a></li><li><a href="#method.is_sorted" title="is_sorted">is_sorted</a></li><li><a href="#method.is_sorted_by" title="is_sorted_by">is_sorted_by</a></li><li><a href="#method.is_sorted_by_key" title="is_sorted_by_key">is_sorted_by_key</a></li><li><a href="#method.iter" title="iter">iter</a></li><li><a href="#method.iter_mut" title="iter_mut">iter_mut</a></li><li><a href="#method.last" title="last">last</a></li><li><a href="#method.last_chunk" title="last_chunk">last_chunk</a></li><li><a href="#method.last_chunk_mut" title="last_chunk_mut">last_chunk_mut</a></li><li><a href="#method.last_mut" title="last_mut">last_mut</a></li><li><a href="#method.len" title="len">len</a></li><li><a href="#method.make_ascii_lowercase" title="make_ascii_lowercase">make_ascii_lowercase</a></li><li><a href="#method.make_ascii_uppercase" title="make_ascii_uppercase">make_ascii_uppercase</a></li><li><a href="#method.partition_dedup" title="partition_dedup">partition_dedup</a></li><li><a href="#method.partition_dedup_by" title="partition_dedup_by">partition_dedup_by</a></li><li><a href="#method.partition_dedup_by_key" title="partition_dedup_by_key">partition_dedup_by_key</a></li><li><a href="#method.partition_point" title="partition_point">partition_point</a></li><li><a href="#method.rchunks" title="rchunks">rchunks</a></li><li><a href="#method.rchunks_exact" title="rchunks_exact">rchunks_exact</a></li><li><a href="#method.rchunks_exact_mut" title="rchunks_exact_mut">rchunks_exact_mut</a></li><li><a href="#method.rchunks_mut" title="rchunks_mut">rchunks_mut</a></li><li><a href="#method.reverse" title="reverse">reverse</a></li><li><a href="#method.rotate_left" title="rotate_left">rotate_left</a></li><li><a href="#method.rotate_right" title="rotate_right">rotate_right</a></li><li><a href="#method.rsplit" title="rsplit">rsplit</a></li><li><a href="#method.rsplit_mut" title="rsplit_mut">rsplit_mut</a></li><li><a href="#method.rsplit_once" title="rsplit_once">rsplit_once</a></li><li><a href="#method.rsplitn" title="rsplitn">rsplitn</a></li><li><a href="#method.rsplitn_mut" title="rsplitn_mut">rsplitn_mut</a></li><li><a href="#method.select_nth_unstable" title="select_nth_unstable">select_nth_unstable</a></li><li><a href="#method.select_nth_unstable_by" title="select_nth_unstable_by">select_nth_unstable_by</a></li><li><a href="#method.select_nth_unstable_by_key" title="select_nth_unstable_by_key">select_nth_unstable_by_key</a></li><li><a href="#method.sort_floats" title="sort_floats">sort_floats</a></li><li><a href="#method.sort_floats-1" title="sort_floats">sort_floats</a></li><li><a href="#method.sort_unstable" title="sort_unstable">sort_unstable</a></li><li><a href="#method.sort_unstable_by" title="sort_unstable_by">sort_unstable_by</a></li><li><a href="#method.sort_unstable_by_key" title="sort_unstable_by_key">sort_unstable_by_key</a></li><li><a href="#method.split" title="split">split</a></li><li><a href="#method.split_at" title="split_at">split_at</a></li><li><a href="#method.split_at_checked" title="split_at_checked">split_at_checked</a></li><li><a href="#method.split_at_mut" title="split_at_mut">split_at_mut</a></li><li><a href="#method.split_at_mut_checked" title="split_at_mut_checked">split_at_mut_checked</a></li><li><a href="#method.split_at_mut_unchecked" title="split_at_mut_unchecked">split_at_mut_unchecked</a></li><li><a href="#method.split_at_unchecked" title="split_at_unchecked">split_at_unchecked</a></li><li><a href="#method.split_first" title="split_first">split_first</a></li><li><a href="#method.split_first_chunk" title="split_first_chunk">split_first_chunk</a></li><li><a href="#method.split_first_chunk_mut" title="split_first_chunk_mut">split_first_chunk_mut</a></li><li><a href="#method.split_first_mut" title="split_first_mut">split_first_mut</a></li><li><a href="#method.split_inclusive" title="split_inclusive">split_inclusive</a></li><li><a href="#method.split_inclusive_mut" title="split_inclusive_mut">split_inclusive_mut</a></li><li><a href="#method.split_last" title="split_last">split_last</a></li><li><a href="#method.split_last_chunk" title="split_last_chunk">split_last_chunk</a></li><li><a href="#method.split_last_chunk_mut" title="split_last_chunk_mut">split_last_chunk_mut</a></li><li><a href="#method.split_last_mut" title="split_last_mut">split_last_mut</a></li><li><a href="#method.split_mut" title="split_mut">split_mut</a></li><li><a href="#method.split_once" title="split_once">split_once</a></li><li><a href="#method.splitn" title="splitn">splitn</a></li><li><a href="#method.splitn_mut" title="splitn_mut">splitn_mut</a></li><li><a href="#method.starts_with" title="starts_with">starts_with</a></li><li><a href="#method.strip_prefix" title="strip_prefix">strip_prefix</a></li><li><a href="#method.strip_suffix" title="strip_suffix">strip_suffix</a></li><li><a href="#method.subslice_range" title="subslice_range">subslice_range</a></li><li><a href="#method.swap" title="swap">swap</a></li><li><a href="#method.swap_unchecked" title="swap_unchecked">swap_unchecked</a></li><li><a href="#method.swap_with_slice" title="swap_with_slice">swap_with_slice</a></li><li><a href="#method.take" title="take">take</a></li><li><a href="#method.take_first" title="take_first">take_first</a></li><li><a href="#method.take_first_mut" title="take_first_mut">take_first_mut</a></li><li><a href="#method.take_last" title="take_last">take_last</a></li><li><a href="#method.take_last_mut" title="take_last_mut">take_last_mut</a></li><li><a href="#method.take_mut" title="take_mut">take_mut</a></li><li><a href="#method.trim_ascii" title="trim_ascii">trim_ascii</a></li><li><a href="#method.trim_ascii_end" title="trim_ascii_end">trim_ascii_end</a></li><li><a href="#method.trim_ascii_start" title="trim_ascii_start">trim_ascii_start</a></li><li><a href="#method.utf8_chunks" title="utf8_chunks">utf8_chunks</a></li><li><a href="#method.windows" title="windows">windows</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Default-for-AllocatedStackMemory%3C'a,+T%3E" title="Default">Default</a></li><li><a href="#impl-Deref-for-AllocatedStackMemory%3C'a,+T%3E" title="Deref">Deref</a></li><li><a href="#impl-DerefMut-for-AllocatedStackMemory%3C'a,+T%3E" title="DerefMut">DerefMut</a></li><li><a href="#impl-Index%3CRange%3Cusize%3E%3E-for-AllocatedStackMemory%3C'a,+T%3E" title="Index<Range<usize>>">Index<Range<usize>></a></li><li><a href="#impl-Index%3Cusize%3E-for-AllocatedStackMemory%3C'a,+T%3E" title="Index<usize>">Index<usize></a></li><li><a href="#impl-IndexMut%3CRange%3Cusize%3E%3E-for-AllocatedStackMemory%3C'a,+T%3E" title="IndexMut<Range<usize>>">IndexMut<Range<usize>></a></li><li><a href="#impl-IndexMut%3Cusize%3E-for-AllocatedStackMemory%3C'a,+T%3E" title="IndexMut<usize>">IndexMut<usize></a></li><li><a href="#impl-SliceWrapper%3CT%3E-for-AllocatedStackMemory%3C'a,+T%3E" title="SliceWrapper<T>">SliceWrapper<T></a></li><li><a href="#impl-SliceWrapperMut%3CT%3E-for-AllocatedStackMemory%3C'a,+T%3E" title="SliceWrapperMut<T>">SliceWrapperMut<T></a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-UnwindSafe-for-AllocatedStackMemory%3C'a,+T%3E" title="!UnwindSafe">!UnwindSafe</a></li><li><a href="#impl-Freeze-for-AllocatedStackMemory%3C'a,+T%3E" title="Freeze">Freeze</a></li><li><a href="#impl-RefUnwindSafe-for-AllocatedStackMemory%3C'a,+T%3E" title="RefUnwindSafe">RefUnwindSafe</a></li><li><a href="#impl-Send-for-AllocatedStackMemory%3C'a,+T%3E" title="Send">Send</a></li><li><a href="#impl-Sync-for-AllocatedStackMemory%3C'a,+T%3E" title="Sync">Sync</a></li><li><a href="#impl-Unpin-for-AllocatedStackMemory%3C'a,+T%3E" title="Unpin">Unpin</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-AllocatedSlice%3CT%3E-for-U" title="AllocatedSlice<T>">AllocatedSlice<T></a></li><li><a href="#impl-Any-for-T" title="Any">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T" title="Borrow<T>">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T" title="BorrowMut<T>">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-T" title="From<T>">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-T" title="Into<U>">Into<U></a></li><li><a href="#impl-Receiver-for-P" title="Receiver">Receiver</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T" title="TryFrom<U>">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-T" title="TryInto<U>">TryInto<U></a></li></ul></section><div id="rustdoc-modnav"><h2 class="in-crate"><a href="index.html">In crate alloc_<wbr>no_<wbr>stdlib</a></h2></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="index.html">alloc_no_stdlib</a></span><h1>Struct <span class="struct">AllocatedStackMemory</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/alloc_no_stdlib/allocated_stack_memory.rs.html#6-8">Source</a> </span></div><pre class="rust item-decl"><code>pub struct AllocatedStackMemory<'a, T: 'a> {
pub mem: &'a mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>,
}</code></pre><h2 id="fields" class="fields section-header">Fields<a href="#fields" class="anchor">§</a></h2><span id="structfield.mem" class="structfield section-header"><a href="#structfield.mem" class="anchor field">§</a><code>mem: &'a mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a></code></span><details class="toggle big-toggle" open><summary><h2 id="deref-methods-%5BT%5D" class="section-header"><span>Methods from <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/deref/trait.Deref.html" title="trait core::ops::deref::Deref">Deref</a><Target = <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>></span><a href="#deref-methods-%5BT%5D" class="anchor">§</a></h2></summary><div id="deref-methods-%5BT%5D-1" class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.as_str" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/ascii/ascii_char.rs.html#564">Source</a><h4 class="code-header">pub fn <a href="#method.as_str" class="fn">as_str</a>(&self) -> &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.str.html">str</a></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>ascii_char</code>)</span></div></span></summary><div class="docblock"><p>Views this slice of ASCII characters as a UTF-8 <code>str</code>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_bytes" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/ascii/ascii_char.rs.html#575">Source</a><h4 class="code-header">pub fn <a href="#method.as_bytes" class="fn">as_bytes</a>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html">u8</a>]</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>ascii_char</code>)</span></div></span></summary><div class="docblock"><p>Views this slice of ASCII characters as a slice of <code>u8</code> bytes.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_ascii" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#17">Source</a></span><h4 class="code-header">pub fn <a href="#method.is_ascii" class="fn">is_ascii</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Checks if all bytes in this slice are within the ASCII range.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_ascii" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#26">Source</a><h4 class="code-header">pub fn <a href="#method.as_ascii" class="fn">as_ascii</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&[<a class="enum" href="https://doc.rust-lang.org/1.85.0/core/ascii/ascii_char/enum.AsciiChar.html" title="enum core::ascii::ascii_char::AsciiChar">AsciiChar</a>]></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>ascii_char</code>)</span></div></span></summary><div class="docblock"><p>If this slice <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.is_ascii" title="method slice::is_ascii"><code>is_ascii</code></a>, returns it as a slice of
<a href="https://doc.rust-lang.org/1.85.0/core/ascii/ascii_char/enum.AsciiChar.html" title="enum core::ascii::ascii_char::AsciiChar">ASCII characters</a>, otherwise returns <code>None</code>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_ascii_unchecked" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#44">Source</a><h4 class="code-header">pub unsafe fn <a href="#method.as_ascii_unchecked" class="fn">as_ascii_unchecked</a>(&self) -> &[<a class="enum" href="https://doc.rust-lang.org/1.85.0/core/ascii/ascii_char/enum.AsciiChar.html" title="enum core::ascii::ascii_char::AsciiChar">AsciiChar</a>]</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>ascii_char</code>)</span></div></span></summary><div class="docblock"><p>Converts this slice of bytes into a slice of ASCII characters,
without checking whether they’re valid.</p>
<h5 id="safety"><a class="doc-anchor" href="#safety">§</a>Safety</h5>
<p>Every byte in the slice must be in <code>0..=127</code>, or else this is UB.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.eq_ignore_ascii_case" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#59">Source</a></span><h4 class="code-header">pub fn <a href="#method.eq_ignore_ascii_case" class="fn">eq_ignore_ascii_case</a>(&self, other: &[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html">u8</a>]) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Checks that two slices are an ASCII case-insensitive match.</p>
<p>Same as <code>to_ascii_lowercase(a) == to_ascii_lowercase(b)</code>,
but without allocating and copying temporaries.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.make_ascii_uppercase" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#94">Source</a></span><h4 class="code-header">pub fn <a href="#method.make_ascii_uppercase" class="fn">make_ascii_uppercase</a>(&mut self)</h4></section></summary><div class="docblock"><p>Converts this slice to its ASCII upper case equivalent in-place.</p>
<p>ASCII letters ‘a’ to ‘z’ are mapped to ‘A’ to ‘Z’,
but non-ASCII letters are unchanged.</p>
<p>To return a new uppercased value without modifying the existing one, use
<a href="#method.to_ascii_uppercase"><code>to_ascii_uppercase</code></a>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.make_ascii_lowercase" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.23.0">1.23.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#116">Source</a></span><h4 class="code-header">pub fn <a href="#method.make_ascii_lowercase" class="fn">make_ascii_lowercase</a>(&mut self)</h4></section></summary><div class="docblock"><p>Converts this slice to its ASCII lower case equivalent in-place.</p>
<p>ASCII letters ‘A’ to ‘Z’ are mapped to ‘a’ to ‘z’,
but non-ASCII letters are unchanged.</p>
<p>To return a new lowercased value without modifying the existing one, use
<a href="#method.to_ascii_lowercase"><code>to_ascii_lowercase</code></a>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.escape_ascii" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.60.0">1.60.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#140">Source</a></span><h4 class="code-header">pub fn <a href="#method.escape_ascii" class="fn">escape_ascii</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/ascii/struct.EscapeAscii.html" title="struct core::slice::ascii::EscapeAscii">EscapeAscii</a><'_></h4></section></summary><div class="docblock"><p>Returns an iterator that produces an escaped version of this slice,
treating it as an ASCII string.</p>
<h5 id="examples"><a class="doc-anchor" href="#examples">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code>
<span class="kw">let </span>s = <span class="string">b"0\t\r\n'\"\\\x9d"</span>;
<span class="kw">let </span>escaped = s.escape_ascii().to_string();
<span class="macro">assert_eq!</span>(escaped, <span class="string">"0\\t\\r\\n\\'\\\"\\\\\\x9d"</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.trim_ascii_start" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.80.0">1.80.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#159">Source</a></span><h4 class="code-header">pub fn <a href="#method.trim_ascii_start" class="fn">trim_ascii_start</a>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html">u8</a>]</h4></section></summary><div class="docblock"><p>Returns a byte slice with leading ASCII whitespace bytes removed.</p>
<p>‘Whitespace’ refers to the definition used by
<a href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html#method.is_ascii_whitespace" title="method u8::is_ascii_whitespace"><code>u8::is_ascii_whitespace</code></a>.</p>
<h5 id="examples-1"><a class="doc-anchor" href="#examples-1">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="string">b" \t hello world\n"</span>.trim_ascii_start(), <span class="string">b"hello world\n"</span>);
<span class="macro">assert_eq!</span>(<span class="string">b" "</span>.trim_ascii_start(), <span class="string">b""</span>);
<span class="macro">assert_eq!</span>(<span class="string">b""</span>.trim_ascii_start(), <span class="string">b""</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.trim_ascii_end" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.80.0">1.80.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#188">Source</a></span><h4 class="code-header">pub fn <a href="#method.trim_ascii_end" class="fn">trim_ascii_end</a>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html">u8</a>]</h4></section></summary><div class="docblock"><p>Returns a byte slice with trailing ASCII whitespace bytes removed.</p>
<p>‘Whitespace’ refers to the definition used by
<a href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html#method.is_ascii_whitespace" title="method u8::is_ascii_whitespace"><code>u8::is_ascii_whitespace</code></a>.</p>
<h5 id="examples-2"><a class="doc-anchor" href="#examples-2">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="string">b"\r hello world\n "</span>.trim_ascii_end(), <span class="string">b"\r hello world"</span>);
<span class="macro">assert_eq!</span>(<span class="string">b" "</span>.trim_ascii_end(), <span class="string">b""</span>);
<span class="macro">assert_eq!</span>(<span class="string">b""</span>.trim_ascii_end(), <span class="string">b""</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.trim_ascii" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.80.0">1.80.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/ascii.rs.html#218">Source</a></span><h4 class="code-header">pub fn <a href="#method.trim_ascii" class="fn">trim_ascii</a>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html">u8</a>]</h4></section></summary><div class="docblock"><p>Returns a byte slice with leading and trailing ASCII whitespace bytes
removed.</p>
<p>‘Whitespace’ refers to the definition used by
<a href="https://doc.rust-lang.org/1.85.0/core/primitive.u8.html#method.is_ascii_whitespace" title="method u8::is_ascii_whitespace"><code>u8::is_ascii_whitespace</code></a>.</p>
<h5 id="examples-3"><a class="doc-anchor" href="#examples-3">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="macro">assert_eq!</span>(<span class="string">b"\r hello world\n "</span>.trim_ascii(), <span class="string">b"hello world"</span>);
<span class="macro">assert_eq!</span>(<span class="string">b" "</span>.trim_ascii(), <span class="string">b""</span>);
<span class="macro">assert_eq!</span>(<span class="string">b""</span>.trim_ascii(), <span class="string">b""</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.len" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#117">Source</a></span><h4 class="code-header">pub fn <a href="#method.len" class="fn">len</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a></h4></section></summary><div class="docblock"><p>Returns the number of elements in the slice.</p>
<h5 id="examples-4"><a class="doc-anchor" href="#examples-4">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
<span class="macro">assert_eq!</span>(a.len(), <span class="number">3</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.is_empty" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#136">Source</a></span><h4 class="code-header">pub fn <a href="#method.is_empty" class="fn">is_empty</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if the slice has a length of 0.</p>
<h5 id="examples-5"><a class="doc-anchor" href="#examples-5">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
<span class="macro">assert!</span>(!a.is_empty());
<span class="kw">let </span>b: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[];
<span class="macro">assert!</span>(b.is_empty());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.first" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#155">Source</a></span><h4 class="code-header">pub fn <a href="#method.first" class="fn">first</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>></h4></section></summary><div class="docblock"><p>Returns the first element of the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-6"><a class="doc-anchor" href="#examples-6">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">10</span>), v.first());
<span class="kw">let </span>w: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[];
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, w.first());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.first_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#178">Source</a></span><h4 class="code-header">pub fn <a href="#method.first_mut" class="fn">first_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&mut T</a>></h4></section></summary><div class="docblock"><p>Returns a mutable reference to the first element of the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-7"><a class="doc-anchor" href="#examples-7">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>(first) = x.first_mut() {
<span class="kw-2">*</span>first = <span class="number">5</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">5</span>, <span class="number">1</span>, <span class="number">2</span>]);
<span class="kw">let </span>y: <span class="kw-2">&mut </span>[i32] = <span class="kw-2">&mut </span>[];
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, y.first_mut());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_first" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#198">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_first" class="fn">split_first</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>, &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the first and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-8"><a class="doc-anchor" href="#examples-8">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((first, elements)) = x.split_first() {
<span class="macro">assert_eq!</span>(first, <span class="kw-2">&</span><span class="number">0</span>);
<span class="macro">assert_eq!</span>(elements, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>]);
}</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_first_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#220">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_first_mut" class="fn">split_first_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&mut T</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the first and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-9"><a class="doc-anchor" href="#examples-9">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((first, elements)) = x.split_first_mut() {
<span class="kw-2">*</span>first = <span class="number">3</span>;
elements[<span class="number">0</span>] = <span class="number">4</span>;
elements[<span class="number">1</span>] = <span class="number">5</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_last" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#240">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_last" class="fn">split_last</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>, &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the last and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-10"><a class="doc-anchor" href="#examples-10">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((last, elements)) = x.split_last() {
<span class="macro">assert_eq!</span>(last, <span class="kw-2">&</span><span class="number">2</span>);
<span class="macro">assert_eq!</span>(elements, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>]);
}</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_last_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.5.0">1.5.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#262">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_last_mut" class="fn">split_last_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&mut T</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns the last and all the rest of the elements of the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-11"><a class="doc-anchor" href="#examples-11">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((last, elements)) = x.split_last_mut() {
<span class="kw-2">*</span>last = <span class="number">3</span>;
elements[<span class="number">0</span>] = <span class="number">4</span>;
elements[<span class="number">1</span>] = <span class="number">5</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">4</span>, <span class="number">5</span>, <span class="number">3</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.last" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#281">Source</a></span><h4 class="code-header">pub fn <a href="#method.last" class="fn">last</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>></h4></section></summary><div class="docblock"><p>Returns the last element of the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-12"><a class="doc-anchor" href="#examples-12">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">30</span>), v.last());
<span class="kw">let </span>w: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[];
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, w.last());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.last_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#304">Source</a></span><h4 class="code-header">pub fn <a href="#method.last_mut" class="fn">last_mut</a>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&mut T</a>></h4></section></summary><div class="docblock"><p>Returns a mutable reference to the last item in the slice, or <code>None</code> if it is empty.</p>
<h5 id="examples-13"><a class="doc-anchor" href="#examples-13">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>(last) = x.last_mut() {
<span class="kw-2">*</span>last = <span class="number">10</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">10</span>]);
<span class="kw">let </span>y: <span class="kw-2">&mut </span>[i32] = <span class="kw-2">&mut </span>[];
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, y.last_mut());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.first_chunk" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#327">Source</a></span><h4 class="code-header">pub fn <a href="#method.first_chunk" class="fn">first_chunk</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>></h4></section></summary><div class="docblock"><p>Returns an array reference to the first <code>N</code> items in the slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-14"><a class="doc-anchor" href="#examples-14">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>u = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>]), u.first_chunk::<<span class="number">2</span>>());
<span class="kw">let </span>v: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[<span class="number">10</span>];
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.first_chunk::<<span class="number">2</span>>());
<span class="kw">let </span>w: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[];
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span>[]), w.first_chunk::<<span class="number">0</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.first_chunk_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#357">Source</a></span><h4 class="code-header">pub fn <a href="#method.first_chunk_mut" class="fn">first_chunk_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>></h4></section></summary><div class="docblock"><p>Returns a mutable array reference to the first <code>N</code> items in the slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-15"><a class="doc-anchor" href="#examples-15">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>(first) = x.first_chunk_mut::<<span class="number">2</span>>() {
first[<span class="number">0</span>] = <span class="number">5</span>;
first[<span class="number">1</span>] = <span class="number">4</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">5</span>, <span class="number">4</span>, <span class="number">2</span>]);
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, x.first_chunk_mut::<<span class="number">4</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_first_chunk" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#387">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_first_chunk" class="fn">split_first_chunk</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>, &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns an array reference to the first <code>N</code> items in the slice and the remaining slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-16"><a class="doc-anchor" href="#examples-16">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((first, elements)) = x.split_first_chunk::<<span class="number">2</span>>() {
<span class="macro">assert_eq!</span>(first, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>]);
<span class="macro">assert_eq!</span>(elements, <span class="kw-2">&</span>[<span class="number">2</span>]);
}
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, x.split_first_chunk::<<span class="number">4</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_first_chunk_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#422-424">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_first_chunk_mut" class="fn">split_first_chunk_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(
&mut self,
) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Returns a mutable array reference to the first <code>N</code> items in the slice and the remaining
slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-17"><a class="doc-anchor" href="#examples-17">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((first, elements)) = x.split_first_chunk_mut::<<span class="number">2</span>>() {
first[<span class="number">0</span>] = <span class="number">3</span>;
first[<span class="number">1</span>] = <span class="number">4</span>;
elements[<span class="number">0</span>] = <span class="number">5</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>]);
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, x.split_first_chunk_mut::<<span class="number">4</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_last_chunk" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#457">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_last_chunk" class="fn">split_last_chunk</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>)></h4></section></summary><div class="docblock"><p>Returns an array reference to the last <code>N</code> items in the slice and the remaining slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-18"><a class="doc-anchor" href="#examples-18">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((elements, last)) = x.split_last_chunk::<<span class="number">2</span>>() {
<span class="macro">assert_eq!</span>(elements, <span class="kw-2">&</span>[<span class="number">0</span>]);
<span class="macro">assert_eq!</span>(last, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>]);
}
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, x.split_last_chunk::<<span class="number">4</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_last_chunk_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#492-494">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_last_chunk_mut" class="fn">split_last_chunk_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(
&mut self,
) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>)></h4></section></summary><div class="docblock"><p>Returns a mutable array reference to the last <code>N</code> items in the slice and the remaining
slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-19"><a class="doc-anchor" href="#examples-19">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((elements, last)) = x.split_last_chunk_mut::<<span class="number">2</span>>() {
last[<span class="number">0</span>] = <span class="number">3</span>;
last[<span class="number">1</span>] = <span class="number">4</span>;
elements[<span class="number">0</span>] = <span class="number">5</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">5</span>, <span class="number">3</span>, <span class="number">4</span>]);
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, x.split_last_chunk_mut::<<span class="number">4</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.last_chunk" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#527">Source</a></span><h4 class="code-header">pub fn <a href="#method.last_chunk" class="fn">last_chunk</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>></h4></section></summary><div class="docblock"><p>Returns an array reference to the last <code>N</code> items in the slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-20"><a class="doc-anchor" href="#examples-20">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>u = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">40</span>, <span class="number">30</span>]), u.last_chunk::<<span class="number">2</span>>());
<span class="kw">let </span>v: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[<span class="number">10</span>];
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.last_chunk::<<span class="number">2</span>>());
<span class="kw">let </span>w: <span class="kw-2">&</span>[i32] = <span class="kw-2">&</span>[];
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span>[]), w.last_chunk::<<span class="number">0</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.last_chunk_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#561">Source</a></span><h4 class="code-header">pub fn <a href="#method.last_chunk_mut" class="fn">last_chunk_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>></h4></section></summary><div class="docblock"><p>Returns a mutable array reference to the last <code>N</code> items in the slice.</p>
<p>If the slice is not at least <code>N</code> in length, this will return <code>None</code>.</p>
<h5 id="examples-21"><a class="doc-anchor" href="#examples-21">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>(last) = x.last_chunk_mut::<<span class="number">2</span>>() {
last[<span class="number">0</span>] = <span class="number">10</span>;
last[<span class="number">1</span>] = <span class="number">20</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">10</span>, <span class="number">20</span>]);
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, x.last_chunk_mut::<<span class="number">4</span>>());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.get" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#596-598">Source</a></span><h4 class="code-header">pub fn <a href="#method.get" class="fn">get</a><I>(&self, index: I) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<I as <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a>><div class="where">where
I: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>,</div></h4></section></summary><div class="docblock"><p>Returns a reference to an element or subslice depending on the type of
index.</p>
<ul>
<li>If given a position, returns a reference to the element at that
position or <code>None</code> if out of bounds.</li>
<li>If given a range, returns the subslice corresponding to that range,
or <code>None</code> if out of bounds.</li>
</ul>
<h5 id="examples-22"><a class="doc-anchor" href="#examples-22">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">30</span>];
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">40</span>), v.get(<span class="number">1</span>));
<span class="macro">assert_eq!</span>(<span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>][..]), v.get(<span class="number">0</span>..<span class="number">2</span>));
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.get(<span class="number">3</span>));
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.get(<span class="number">0</span>..<span class="number">4</span>));</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.get_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#621-623">Source</a></span><h4 class="code-header">pub fn <a href="#method.get_mut" class="fn">get_mut</a><I>(
&mut self,
index: I,
) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut <I as <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a>><div class="where">where
I: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>,</div></h4></section></summary><div class="docblock"><p>Returns a mutable reference to an element or subslice depending on the
type of index (see <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.get" title="method slice::get"><code>get</code></a>) or <code>None</code> if the index is out of bounds.</p>
<h5 id="examples-23"><a class="doc-anchor" href="#examples-23">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>(elem) = x.get_mut(<span class="number">1</span>) {
<span class="kw-2">*</span>elem = <span class="number">42</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">42</span>, <span class="number">2</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.get_unchecked" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#658-660">Source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.get_unchecked" class="fn">get_unchecked</a><I>(
&self,
index: I,
) -> &<I as <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a><div class="where">where
I: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>,</div></h4></section></summary><div class="docblock"><p>Returns a reference to an element or subslice, without doing bounds
checking.</p>
<p>For a safe alternative see <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.get" title="method slice::get"><code>get</code></a>.</p>
<h5 id="safety-1"><a class="doc-anchor" href="#safety-1">§</a>Safety</h5>
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
even if the resulting reference is not used.</p>
<p>You can think of this like <code>.get(index).unwrap_unchecked()</code>. It’s UB
to call <code>.get_unchecked(len)</code>, even if you immediately convert to a
pointer. And it’s UB to call <code>.get_unchecked(..len + 1)</code>,
<code>.get_unchecked(..=len)</code>, or similar.</p>
<h5 id="examples-24"><a class="doc-anchor" href="#examples-24">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
<span class="kw">unsafe </span>{
<span class="macro">assert_eq!</span>(x.get_unchecked(<span class="number">1</span>), <span class="kw-2">&</span><span class="number">2</span>);
}</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.get_unchecked_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#700-702">Source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.get_unchecked_mut" class="fn">get_unchecked_mut</a><I>(
&mut self,
index: I,
) -> &mut <I as <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html#associatedtype.Output" title="type core::slice::index::SliceIndex::Output">Output</a><div class="where">where
I: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/slice/index/trait.SliceIndex.html" title="trait core::slice::index::SliceIndex">SliceIndex</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>>,</div></h4></section></summary><div class="docblock"><p>Returns a mutable reference to an element or subslice, without doing
bounds checking.</p>
<p>For a safe alternative see <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.get_mut" title="method slice::get_mut"><code>get_mut</code></a>.</p>
<h5 id="safety-2"><a class="doc-anchor" href="#safety-2">§</a>Safety</h5>
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
even if the resulting reference is not used.</p>
<p>You can think of this like <code>.get_mut(index).unwrap_unchecked()</code>. It’s
UB to call <code>.get_unchecked_mut(len)</code>, even if you immediately convert
to a pointer. And it’s UB to call <code>.get_unchecked_mut(..len + 1)</code>,
<code>.get_unchecked_mut(..=len)</code>, or similar.</p>
<h5 id="examples-25"><a class="doc-anchor" href="#examples-25">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
<span class="kw">unsafe </span>{
<span class="kw">let </span>elem = x.get_unchecked_mut(<span class="number">1</span>);
<span class="kw-2">*</span>elem = <span class="number">13</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">13</span>, <span class="number">4</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_ptr" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#742">Source</a></span><h4 class="code-header">pub fn <a href="#method.as_ptr" class="fn">as_ptr</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.pointer.html">*const T</a></h4></section></summary><div class="docblock"><p>Returns a raw pointer to the slice’s buffer.</p>
<p>The caller must ensure that the slice outlives the pointer this
function returns, or else it will end up dangling.</p>
<p>The caller must also ensure that the memory the pointer (non-transitively) points to
is never written to (except inside an <code>UnsafeCell</code>) using this pointer or any pointer
derived from it. If you need to mutate the contents of the slice, use <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.as_mut_ptr" title="method slice::as_mut_ptr"><code>as_mut_ptr</code></a>.</p>
<p>Modifying the container referenced by this slice may cause its buffer
to be reallocated, which would also make any pointers to it invalid.</p>
<h5 id="examples-26"><a class="doc-anchor" href="#examples-26">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
<span class="kw">let </span>x_ptr = x.as_ptr();
<span class="kw">unsafe </span>{
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..x.len() {
<span class="macro">assert_eq!</span>(x.get_unchecked(i), <span class="kw-2">&*</span>x_ptr.add(i));
}
}</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_mut_ptr" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#773">Source</a></span><h4 class="code-header">pub fn <a href="#method.as_mut_ptr" class="fn">as_mut_ptr</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.pointer.html">*mut T</a></h4></section></summary><div class="docblock"><p>Returns an unsafe mutable pointer to the slice’s buffer.</p>
<p>The caller must ensure that the slice outlives the pointer this
function returns, or else it will end up dangling.</p>
<p>Modifying the container referenced by this slice may cause its buffer
to be reallocated, which would also make any pointers to it invalid.</p>
<h5 id="examples-27"><a class="doc-anchor" href="#examples-27">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
<span class="kw">let </span>x_ptr = x.as_mut_ptr();
<span class="kw">unsafe </span>{
<span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..x.len() {
<span class="kw-2">*</span>x_ptr.add(i) += <span class="number">2</span>;
}
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">6</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_ptr_range" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.48.0">1.48.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#809">Source</a></span><h4 class="code-header">pub fn <a href="#method.as_ptr_range" class="fn">as_ptr_range</a>(&self) -> <a class="struct" href="allocated_memory/struct.Range.html" title="struct alloc_no_stdlib::allocated_memory::Range">Range</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.pointer.html">*const T</a>> <a href="#" class="tooltip" data-notable-ty="Range<*const T>">ⓘ</a></h4></section></summary><div class="docblock"><p>Returns the two raw pointers spanning the slice.</p>
<p>The returned range is half-open, which means that the end pointer
points <em>one past</em> the last element of the slice. This way, an empty
slice is represented by two equal pointers, and the difference between
the two pointers represents the size of the slice.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.as_ptr" title="method slice::as_ptr"><code>as_ptr</code></a> for warnings on using these pointers. The end pointer
requires extra caution, as it does not point to a valid element in the
slice.</p>
<p>This function is useful for interacting with foreign interfaces which
use two pointers to refer to a range of elements in memory, as is
common in C++.</p>
<p>It can also be useful to check if a pointer to an element refers to an
element of this slice:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>a = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
<span class="kw">let </span>x = <span class="kw-2">&</span>a[<span class="number">1</span>] <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_</span>;
<span class="kw">let </span>y = <span class="kw-2">&</span><span class="number">5 </span><span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_</span>;
<span class="macro">assert!</span>(a.as_ptr_range().contains(<span class="kw-2">&</span>x));
<span class="macro">assert!</span>(!a.as_ptr_range().contains(<span class="kw-2">&</span>y));</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_mut_ptr_range" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.48.0">1.48.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#852">Source</a></span><h4 class="code-header">pub fn <a href="#method.as_mut_ptr_range" class="fn">as_mut_ptr_range</a>(&mut self) -> <a class="struct" href="allocated_memory/struct.Range.html" title="struct alloc_no_stdlib::allocated_memory::Range">Range</a><<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.pointer.html">*mut T</a>> <a href="#" class="tooltip" data-notable-ty="Range<*mut T>">ⓘ</a></h4></section></summary><div class="docblock"><p>Returns the two unsafe mutable pointers spanning the slice.</p>
<p>The returned range is half-open, which means that the end pointer
points <em>one past</em> the last element of the slice. This way, an empty
slice is represented by two equal pointers, and the difference between
the two pointers represents the size of the slice.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.as_mut_ptr" title="method slice::as_mut_ptr"><code>as_mut_ptr</code></a> for warnings on using these pointers. The end
pointer requires extra caution, as it does not point to a valid element
in the slice.</p>
<p>This function is useful for interacting with foreign interfaces which
use two pointers to refer to a range of elements in memory, as is
common in C++.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_array" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#865">Source</a><h4 class="code-header">pub fn <a href="#method.as_array" class="fn">as_array</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_array</code>)</span></div></span></summary><div class="docblock"><p>Gets a reference to the underlying array.</p>
<p>If <code>N</code> is not exactly equal to the length of <code>self</code>, then this method returns <code>None</code>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_mut_array" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#883">Source</a><h4 class="code-header">pub fn <a href="#method.as_mut_array" class="fn">as_mut_array</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_array</code>)</span></div></span></summary><div class="docblock"><p>Gets a mutable reference to the slice’s underlying array.</p>
<p>If <code>N</code> is not exactly equal to the length of <code>self</code>, then this method returns <code>None</code>.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.swap" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#919">Source</a></span><h4 class="code-header">pub fn <a href="#method.swap" class="fn">swap</a>(&mut self, a: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>, b: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>)</h4></section></summary><div class="docblock"><p>Swaps two elements in the slice.</p>
<p>If <code>a</code> equals to <code>b</code>, it’s guaranteed that elements won’t change value.</p>
<h5 id="arguments"><a class="doc-anchor" href="#arguments">§</a>Arguments</h5>
<ul>
<li>a - The index of the first element</li>
<li>b - The index of the second element</li>
</ul>
<h5 id="panics"><a class="doc-anchor" href="#panics">§</a>Panics</h5>
<p>Panics if <code>a</code> or <code>b</code> are out of bounds.</p>
<h5 id="examples-28"><a class="doc-anchor" href="#examples-28">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="string">"a"</span>, <span class="string">"b"</span>, <span class="string">"c"</span>, <span class="string">"d"</span>, <span class="string">"e"</span>];
v.swap(<span class="number">2</span>, <span class="number">4</span>);
<span class="macro">assert!</span>(v == [<span class="string">"a"</span>, <span class="string">"b"</span>, <span class="string">"e"</span>, <span class="string">"d"</span>, <span class="string">"c"</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.swap_unchecked" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#962">Source</a><h4 class="code-header">pub unsafe fn <a href="#method.swap_unchecked" class="fn">swap_unchecked</a>(&mut self, a: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>, b: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_swap_unchecked</code>)</span></div></span></summary><div class="docblock"><p>Swaps two elements in the slice, without doing bounds checking.</p>
<p>For a safe alternative see <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.swap" title="method slice::swap"><code>swap</code></a>.</p>
<h5 id="arguments-1"><a class="doc-anchor" href="#arguments-1">§</a>Arguments</h5>
<ul>
<li>a - The index of the first element</li>
<li>b - The index of the second element</li>
</ul>
<h5 id="safety-3"><a class="doc-anchor" href="#safety-3">§</a>Safety</h5>
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>.
The caller has to ensure that <code>a < self.len()</code> and <code>b < self.len()</code>.</p>
<h5 id="examples-29"><a class="doc-anchor" href="#examples-29">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_swap_unchecked)]
</span><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="string">"a"</span>, <span class="string">"b"</span>, <span class="string">"c"</span>, <span class="string">"d"</span>];
<span class="comment">// SAFETY: we know that 1 and 3 are both indices of the slice
</span><span class="kw">unsafe </span>{ v.swap_unchecked(<span class="number">1</span>, <span class="number">3</span>) };
<span class="macro">assert!</span>(v == [<span class="string">"a"</span>, <span class="string">"d"</span>, <span class="string">"c"</span>, <span class="string">"b"</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.reverse" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#991">Source</a></span><h4 class="code-header">pub fn <a href="#method.reverse" class="fn">reverse</a>(&mut self)</h4></section></summary><div class="docblock"><p>Reverses the order of elements in the slice, in place.</p>
<h5 id="examples-30"><a class="doc-anchor" href="#examples-30">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
v.reverse();
<span class="macro">assert!</span>(v == [<span class="number">3</span>, <span class="number">2</span>, <span class="number">1</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.iter" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1050">Source</a></span><h4 class="code-header">pub fn <a href="#method.iter" class="fn">iter</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.Iter.html" title="struct core::slice::iter::Iter">Iter</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over the slice.</p>
<p>The iterator yields all items from start to end.</p>
<h5 id="examples-31"><a class="doc-anchor" href="#examples-31">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iterator = x.iter();
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">1</span>));
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">2</span>));
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span><span class="number">4</span>));
<span class="macro">assert_eq!</span>(iterator.next(), <span class="prelude-val">None</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.iter_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1069">Source</a></span><h4 class="code-header">pub fn <a href="#method.iter_mut" class="fn">iter_mut</a>(&mut self) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.IterMut.html" title="struct core::slice::iter::IterMut">IterMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator that allows modifying each value.</p>
<p>The iterator yields all items from start to end.</p>
<h5 id="examples-32"><a class="doc-anchor" href="#examples-32">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>x = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">2</span>, <span class="number">4</span>];
<span class="kw">for </span>elem <span class="kw">in </span>x.iter_mut() {
<span class="kw-2">*</span>elem += <span class="number">2</span>;
}
<span class="macro">assert_eq!</span>(x, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">6</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.windows" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1118">Source</a></span><h4 class="code-header">pub fn <a href="#method.windows" class="fn">windows</a>(&self, size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.Windows.html" title="struct core::slice::iter::Windows">Windows</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over all contiguous windows of length
<code>size</code>. The windows overlap. If the slice is shorter than
<code>size</code>, the iterator returns no values.</p>
<h5 id="panics-1"><a class="doc-anchor" href="#panics-1">§</a>Panics</h5>
<p>Panics if <code>size</code> is zero.</p>
<h5 id="examples-33"><a class="doc-anchor" href="#examples-33">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.windows(<span class="number">3</span>);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>]);
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
<p>If the slice is shorter than <code>size</code>:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'f'</span>, <span class="string">'o'</span>, <span class="string">'o'</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.windows(<span class="number">4</span>);
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
<p>There’s no <code>windows_mut</code>, as that existing would let safe code violate the
“only one <code>&mut</code> at a time to the same thing” rule. However, you can sometimes
use <a href="https://doc.rust-lang.org/1.85.0/core/cell/struct.Cell.html#method.as_slice_of_cells" title="method core::cell::Cell::as_slice_of_cells"><code>Cell::as_slice_of_cells</code></a> in
conjunction with <code>windows</code> to accomplish something similar:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>std::cell::Cell;
<span class="kw">let </span><span class="kw-2">mut </span>array = [<span class="string">'R'</span>, <span class="string">'u'</span>, <span class="string">'s'</span>, <span class="string">'t'</span>, <span class="string">' '</span>, <span class="string">'2'</span>, <span class="string">'0'</span>, <span class="string">'1'</span>, <span class="string">'5'</span>];
<span class="kw">let </span>slice = <span class="kw-2">&mut </span>array[..];
<span class="kw">let </span>slice_of_cells: <span class="kw-2">&</span>[Cell<char>] = Cell::from_mut(slice).as_slice_of_cells();
<span class="kw">for </span>w <span class="kw">in </span>slice_of_cells.windows(<span class="number">3</span>) {
Cell::swap(<span class="kw-2">&</span>w[<span class="number">0</span>], <span class="kw-2">&</span>w[<span class="number">2</span>]);
}
<span class="macro">assert_eq!</span>(array, [<span class="string">'s'</span>, <span class="string">'t'</span>, <span class="string">' '</span>, <span class="string">'2'</span>, <span class="string">'0'</span>, <span class="string">'1'</span>, <span class="string">'5'</span>, <span class="string">'u'</span>, <span class="string">'R'</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.chunks" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1153">Source</a></span><h4 class="code-header">pub fn <a href="#method.chunks" class="fn">chunks</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.Chunks.html" title="struct core::slice::iter::Chunks">Chunks</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
beginning of the slice.</p>
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
slice, then the last chunk will not have length <code>chunk_size</code>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_exact" title="method slice::chunks_exact"><code>chunks_exact</code></a> for a variant of this iterator that returns chunks of always exactly
<code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks" title="method slice::rchunks"><code>rchunks</code></a> for the same iterator but starting at the end of the
slice.</p>
<h5 id="panics-2"><a class="doc-anchor" href="#panics-2">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-34"><a class="doc-anchor" href="#examples-34">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunks(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'e'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'m'</span>]);
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.chunks_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1192">Source</a></span><h4 class="code-header">pub fn <a href="#method.chunks_mut" class="fn">chunks_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ChunksMut.html" title="struct core::slice::iter::ChunksMut">ChunksMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
beginning of the slice.</p>
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
length of the slice, then the last chunk will not have length <code>chunk_size</code>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_exact_mut" title="method slice::chunks_exact_mut"><code>chunks_exact_mut</code></a> for a variant of this iterator that returns chunks of always
exactly <code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks_mut" title="method slice::rchunks_mut"><code>rchunks_mut</code></a> for the same iterator but starting at
the end of the slice.</p>
<h5 id="panics-3"><a class="doc-anchor" href="#panics-3">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-35"><a class="doc-anchor" href="#examples-35">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
<span class="kw">for </span>chunk <span class="kw">in </span>v.chunks_mut(<span class="number">2</span>) {
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
<span class="kw-2">*</span>elem += count;
}
count += <span class="number">1</span>;
}
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">3</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.chunks_exact" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1230">Source</a></span><h4 class="code-header">pub fn <a href="#method.chunks_exact" class="fn">chunks_exact</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ChunksExact.html" title="struct core::slice::iter::ChunksExact">ChunksExact</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
beginning of the slice.</p>
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be retrieved
from the <code>remainder</code> function of the iterator.</p>
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
resulting code better than in the case of <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks" title="method slice::chunks"><code>chunks</code></a>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks" title="method slice::chunks"><code>chunks</code></a> for a variant of this iterator that also returns the remainder as a smaller
chunk, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks_exact" title="method slice::rchunks_exact"><code>rchunks_exact</code></a> for the same iterator but starting at the end of the slice.</p>
<h5 id="panics-4"><a class="doc-anchor" href="#panics-4">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-36"><a class="doc-anchor" href="#examples-36">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunks_exact(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'e'</span>]);
<span class="macro">assert!</span>(iter.next().is_none());
<span class="macro">assert_eq!</span>(iter.remainder(), <span class="kw-2">&</span>[<span class="string">'m'</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.chunks_exact_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1273">Source</a></span><h4 class="code-header">pub fn <a href="#method.chunks_exact_mut" class="fn">chunks_exact_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ChunksExactMut.html" title="struct core::slice::iter::ChunksExactMut">ChunksExactMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
beginning of the slice.</p>
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
length of the slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be
retrieved from the <code>into_remainder</code> function of the iterator.</p>
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
resulting code better than in the case of <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_mut" title="method slice::chunks_mut"><code>chunks_mut</code></a>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_mut" title="method slice::chunks_mut"><code>chunks_mut</code></a> for a variant of this iterator that also returns the remainder as a
smaller chunk, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks_exact_mut" title="method slice::rchunks_exact_mut"><code>rchunks_exact_mut</code></a> for the same iterator but starting at the end of
the slice.</p>
<h5 id="panics-5"><a class="doc-anchor" href="#panics-5">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-37"><a class="doc-anchor" href="#examples-37">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
<span class="kw">for </span>chunk <span class="kw">in </span>v.chunks_exact_mut(<span class="number">2</span>) {
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
<span class="kw-2">*</span>elem += count;
}
count += <span class="number">1</span>;
}
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">0</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_chunks_unchecked" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1309">Source</a><h4 class="code-header">pub unsafe fn <a href="#method.as_chunks_unchecked" class="fn">as_chunks_unchecked</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> &[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>]</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
assuming that there’s no remainder.</p>
<h5 id="safety-4"><a class="doc-anchor" href="#safety-4">§</a>Safety</h5>
<p>This may only be called when</p>
<ul>
<li>The slice splits exactly into <code>N</code>-element chunks (aka <code>self.len() % N == 0</code>).</li>
<li><code>N != 0</code>.</li>
</ul>
<h5 id="examples-38"><a class="doc-anchor" href="#examples-38">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
</span><span class="kw">let </span>slice: <span class="kw-2">&</span>[char] = <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>, <span class="string">'!'</span>];
<span class="kw">let </span>chunks: <span class="kw-2">&</span>[[char; <span class="number">1</span>]] =
<span class="comment">// SAFETY: 1-element chunks never have remainder
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked() };
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'l'</span>], [<span class="string">'o'</span>], [<span class="string">'r'</span>], [<span class="string">'e'</span>], [<span class="string">'m'</span>], [<span class="string">'!'</span>]]);
<span class="kw">let </span>chunks: <span class="kw-2">&</span>[[char; <span class="number">3</span>]] =
<span class="comment">// SAFETY: The slice length (6) is a multiple of 3
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked() };
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>], [<span class="string">'e'</span>, <span class="string">'m'</span>, <span class="string">'!'</span>]]);
<span class="comment">// These would be unsound:
// let chunks: &[[_; 5]] = slice.as_chunks_unchecked() // The slice length is not a multiple of 5
// let chunks: &[[_; 0]] = slice.as_chunks_unchecked() // Zero-length chunks are never allowed</span></code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_chunks" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1356">Source</a><h4 class="code-header">pub fn <a href="#method.as_chunks" class="fn">as_chunks</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> (&[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>], &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
starting at the beginning of the slice,
and a remainder slice with length strictly less than <code>N</code>.</p>
<h5 id="panics-6"><a class="doc-anchor" href="#panics-6">§</a>Panics</h5>
<p>Panics if <code>N</code> is zero. This check will most probably get changed to a compile time
error before this method gets stabilized.</p>
<h5 id="examples-39"><a class="doc-anchor" href="#examples-39">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
</span><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span>(chunks, remainder) = slice.as_chunks();
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'l'</span>, <span class="string">'o'</span>], [<span class="string">'r'</span>, <span class="string">'e'</span>]]);
<span class="macro">assert_eq!</span>(remainder, <span class="kw-2">&</span>[<span class="string">'m'</span>]);</code></pre></div>
<p>If you expect the slice to be an exact multiple, you can combine
<code>let</code>-<code>else</code> with an empty slice pattern:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
</span><span class="kw">let </span>slice = [<span class="string">'R'</span>, <span class="string">'u'</span>, <span class="string">'s'</span>, <span class="string">'t'</span>];
<span class="kw">let </span>(chunks, []) = slice.as_chunks::<<span class="number">2</span>>() <span class="kw">else </span>{
<span class="macro">panic!</span>(<span class="string">"slice didn't have even length"</span>)
};
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'R'</span>, <span class="string">'u'</span>], [<span class="string">'s'</span>, <span class="string">'t'</span>]]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_rchunks" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1391">Source</a><h4 class="code-header">pub fn <a href="#method.as_rchunks" class="fn">as_rchunks</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> (&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &[<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>])</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
starting at the end of the slice,
and a remainder slice with length strictly less than <code>N</code>.</p>
<h5 id="panics-7"><a class="doc-anchor" href="#panics-7">§</a>Panics</h5>
<p>Panics if <code>N</code> is zero. This check will most probably get changed to a compile time
error before this method gets stabilized.</p>
<h5 id="examples-40"><a class="doc-anchor" href="#examples-40">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
</span><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span>(remainder, chunks) = slice.as_rchunks();
<span class="macro">assert_eq!</span>(remainder, <span class="kw-2">&</span>[<span class="string">'l'</span>]);
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'o'</span>, <span class="string">'r'</span>], [<span class="string">'e'</span>, <span class="string">'m'</span>]]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.array_chunks" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1431">Source</a><h4 class="code-header">pub fn <a href="#method.array_chunks" class="fn">array_chunks</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ArrayChunks.html" title="struct core::slice::iter::ArrayChunks">ArrayChunks</a><'_, T, N></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>array_chunks</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over <code>N</code> elements of the slice at a time, starting at the
beginning of the slice.</p>
<p>The chunks are array references and do not overlap. If <code>N</code> does not divide the
length of the slice, then the last up to <code>N-1</code> elements will be omitted and can be
retrieved from the <code>remainder</code> function of the iterator.</p>
<p>This method is the const generic equivalent of <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_exact" title="method slice::chunks_exact"><code>chunks_exact</code></a>.</p>
<h5 id="panics-8"><a class="doc-anchor" href="#panics-8">§</a>Panics</h5>
<p>Panics if <code>N</code> is zero. This check will most probably get changed to a compile time
error before this method gets stabilized.</p>
<h5 id="examples-41"><a class="doc-anchor" href="#examples-41">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(array_chunks)]
</span><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.array_chunks();
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>, <span class="string">'o'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'r'</span>, <span class="string">'e'</span>]);
<span class="macro">assert!</span>(iter.next().is_none());
<span class="macro">assert_eq!</span>(iter.remainder(), <span class="kw-2">&</span>[<span class="string">'m'</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_chunks_unchecked_mut" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1469">Source</a><h4 class="code-header">pub unsafe fn <a href="#method.as_chunks_unchecked_mut" class="fn">as_chunks_unchecked_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(
&mut self,
) -> &mut [<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>]</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
assuming that there’s no remainder.</p>
<h5 id="safety-5"><a class="doc-anchor" href="#safety-5">§</a>Safety</h5>
<p>This may only be called when</p>
<ul>
<li>The slice splits exactly into <code>N</code>-element chunks (aka <code>self.len() % N == 0</code>).</li>
<li><code>N != 0</code>.</li>
</ul>
<h5 id="examples-42"><a class="doc-anchor" href="#examples-42">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
</span><span class="kw">let </span>slice: <span class="kw-2">&mut </span>[char] = <span class="kw-2">&mut </span>[<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>, <span class="string">'!'</span>];
<span class="kw">let </span>chunks: <span class="kw-2">&mut </span>[[char; <span class="number">1</span>]] =
<span class="comment">// SAFETY: 1-element chunks never have remainder
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked_mut() };
chunks[<span class="number">0</span>] = [<span class="string">'L'</span>];
<span class="macro">assert_eq!</span>(chunks, <span class="kw-2">&</span>[[<span class="string">'L'</span>], [<span class="string">'o'</span>], [<span class="string">'r'</span>], [<span class="string">'e'</span>], [<span class="string">'m'</span>], [<span class="string">'!'</span>]]);
<span class="kw">let </span>chunks: <span class="kw-2">&mut </span>[[char; <span class="number">3</span>]] =
<span class="comment">// SAFETY: The slice length (6) is a multiple of 3
</span><span class="kw">unsafe </span>{ slice.as_chunks_unchecked_mut() };
chunks[<span class="number">1</span>] = [<span class="string">'a'</span>, <span class="string">'x'</span>, <span class="string">'?'</span>];
<span class="macro">assert_eq!</span>(slice, <span class="kw-2">&</span>[<span class="string">'L'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'a'</span>, <span class="string">'x'</span>, <span class="string">'?'</span>]);
<span class="comment">// These would be unsound:
// let chunks: &[[_; 5]] = slice.as_chunks_unchecked_mut() // The slice length is not a multiple of 5
// let chunks: &[[_; 0]] = slice.as_chunks_unchecked_mut() // Zero-length chunks are never allowed</span></code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_chunks_mut" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1511">Source</a><h4 class="code-header">pub fn <a href="#method.as_chunks_mut" class="fn">as_chunks_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&mut self) -> (&mut [<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>], &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
starting at the beginning of the slice,
and a remainder slice with length strictly less than <code>N</code>.</p>
<h5 id="panics-9"><a class="doc-anchor" href="#panics-9">§</a>Panics</h5>
<p>Panics if <code>N</code> is zero. This check will most probably get changed to a compile time
error before this method gets stabilized.</p>
<h5 id="examples-43"><a class="doc-anchor" href="#examples-43">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
</span><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
<span class="kw">let </span>(chunks, remainder) = v.as_chunks_mut();
remainder[<span class="number">0</span>] = <span class="number">9</span>;
<span class="kw">for </span>chunk <span class="kw">in </span>chunks {
<span class="kw-2">*</span>chunk = [count; <span class="number">2</span>];
count += <span class="number">1</span>;
}
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">9</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.as_rchunks_mut" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1552">Source</a><h4 class="code-header">pub fn <a href="#method.as_rchunks_mut" class="fn">as_rchunks_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&mut self) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &mut [<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.array.html">[T; N]</a>])</h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>slice_as_chunks</code>)</span></div></span></summary><div class="docblock"><p>Splits the slice into a slice of <code>N</code>-element arrays,
starting at the end of the slice,
and a remainder slice with length strictly less than <code>N</code>.</p>
<h5 id="panics-10"><a class="doc-anchor" href="#panics-10">§</a>Panics</h5>
<p>Panics if <code>N</code> is zero. This check will most probably get changed to a compile time
error before this method gets stabilized.</p>
<h5 id="examples-44"><a class="doc-anchor" href="#examples-44">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(slice_as_chunks)]
</span><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
<span class="kw">let </span>(remainder, chunks) = v.as_rchunks_mut();
remainder[<span class="number">0</span>] = <span class="number">9</span>;
<span class="kw">for </span>chunk <span class="kw">in </span>chunks {
<span class="kw-2">*</span>chunk = [count; <span class="number">2</span>];
count += <span class="number">1</span>;
}
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">9</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.array_chunks_mut" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1594">Source</a><h4 class="code-header">pub fn <a href="#method.array_chunks_mut" class="fn">array_chunks_mut</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&mut self) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ArrayChunksMut.html" title="struct core::slice::iter::ArrayChunksMut">ArrayChunksMut</a><'_, T, N></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>array_chunks</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over <code>N</code> elements of the slice at a time, starting at the
beginning of the slice.</p>
<p>The chunks are mutable array references and do not overlap. If <code>N</code> does not divide
the length of the slice, then the last up to <code>N-1</code> elements will be omitted and
can be retrieved from the <code>into_remainder</code> function of the iterator.</p>
<p>This method is the const generic equivalent of <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_exact_mut" title="method slice::chunks_exact_mut"><code>chunks_exact_mut</code></a>.</p>
<h5 id="panics-11"><a class="doc-anchor" href="#panics-11">§</a>Panics</h5>
<p>Panics if <code>N</code> is zero. This check will most probably get changed to a compile time
error before this method gets stabilized.</p>
<h5 id="examples-45"><a class="doc-anchor" href="#examples-45">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(array_chunks)]
</span><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
<span class="kw">for </span>chunk <span class="kw">in </span>v.array_chunks_mut() {
<span class="kw-2">*</span>chunk = [count; <span class="number">2</span>];
count += <span class="number">1</span>;
}
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">0</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.array_windows" class="method"><a class="src rightside" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1627">Source</a><h4 class="code-header">pub fn <a href="#method.array_windows" class="fn">array_windows</a><const N: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ArrayWindows.html" title="struct core::slice::iter::ArrayWindows">ArrayWindows</a><'_, T, N></h4></section><span class="item-info"><div class="stab unstable"><span class="emoji">🔬</span><span>This is a nightly-only experimental API. (<code>array_windows</code>)</span></div></span></summary><div class="docblock"><p>Returns an iterator over overlapping windows of <code>N</code> elements of a slice,
starting at the beginning of the slice.</p>
<p>This is the const generic equivalent of <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.windows" title="method slice::windows"><code>windows</code></a>.</p>
<p>If <code>N</code> is greater than the size of the slice, it will return no windows.</p>
<h5 id="panics-12"><a class="doc-anchor" href="#panics-12">§</a>Panics</h5>
<p>Panics if <code>N</code> is zero. This check will most probably get changed to a compile time
error before this method gets stabilized.</p>
<h5 id="examples-46"><a class="doc-anchor" href="#examples-46">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#![feature(array_windows)]
</span><span class="kw">let </span>slice = [<span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.array_windows();
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">1</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">2</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">3</span>]);
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.rchunks" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1662">Source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks" class="fn">rchunks</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.RChunks.html" title="struct core::slice::iter::RChunks">RChunks</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the end
of the slice.</p>
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
slice, then the last chunk will not have length <code>chunk_size</code>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks_exact" title="method slice::rchunks_exact"><code>rchunks_exact</code></a> for a variant of this iterator that returns chunks of always exactly
<code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks" title="method slice::chunks"><code>chunks</code></a> for the same iterator but starting at the beginning
of the slice.</p>
<h5 id="panics-13"><a class="doc-anchor" href="#panics-13">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-47"><a class="doc-anchor" href="#examples-47">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.rchunks(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'e'</span>, <span class="string">'m'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'o'</span>, <span class="string">'r'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'l'</span>]);
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.rchunks_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1701">Source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks_mut" class="fn">rchunks_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.RChunksMut.html" title="struct core::slice::iter::RChunksMut">RChunksMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the end
of the slice.</p>
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
length of the slice, then the last chunk will not have length <code>chunk_size</code>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks_exact_mut" title="method slice::rchunks_exact_mut"><code>rchunks_exact_mut</code></a> for a variant of this iterator that returns chunks of always
exactly <code>chunk_size</code> elements, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_mut" title="method slice::chunks_mut"><code>chunks_mut</code></a> for the same iterator but starting at the
beginning of the slice.</p>
<h5 id="panics-14"><a class="doc-anchor" href="#panics-14">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-48"><a class="doc-anchor" href="#examples-48">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
<span class="kw">for </span>chunk <span class="kw">in </span>v.rchunks_mut(<span class="number">2</span>) {
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
<span class="kw-2">*</span>elem += count;
}
count += <span class="number">1</span>;
}
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">1</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.rchunks_exact" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1741">Source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks_exact" class="fn">rchunks_exact</a>(&self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.RChunksExact.html" title="struct core::slice::iter::RChunksExact">RChunksExact</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the
end of the slice.</p>
<p>The chunks are slices and do not overlap. If <code>chunk_size</code> does not divide the length of the
slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be retrieved
from the <code>remainder</code> function of the iterator.</p>
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
resulting code better than in the case of <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks" title="method slice::rchunks"><code>rchunks</code></a>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks" title="method slice::rchunks"><code>rchunks</code></a> for a variant of this iterator that also returns the remainder as a smaller
chunk, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_exact" title="method slice::chunks_exact"><code>chunks_exact</code></a> for the same iterator but starting at the beginning of the
slice.</p>
<h5 id="panics-15"><a class="doc-anchor" href="#panics-15">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-49"><a class="doc-anchor" href="#examples-49">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="string">'l'</span>, <span class="string">'o'</span>, <span class="string">'r'</span>, <span class="string">'e'</span>, <span class="string">'m'</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.rchunks_exact(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'e'</span>, <span class="string">'m'</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="string">'o'</span>, <span class="string">'r'</span>]);
<span class="macro">assert!</span>(iter.next().is_none());
<span class="macro">assert_eq!</span>(iter.remainder(), <span class="kw-2">&</span>[<span class="string">'l'</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.rchunks_exact_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.31.0">1.31.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1785">Source</a></span><h4 class="code-header">pub fn <a href="#method.rchunks_exact_mut" class="fn">rchunks_exact_mut</a>(&mut self, chunk_size: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.RChunksExactMut.html" title="struct core::slice::iter::RChunksExactMut">RChunksExactMut</a><'_, T></h4></section></summary><div class="docblock"><p>Returns an iterator over <code>chunk_size</code> elements of the slice at a time, starting at the end
of the slice.</p>
<p>The chunks are mutable slices, and do not overlap. If <code>chunk_size</code> does not divide the
length of the slice, then the last up to <code>chunk_size-1</code> elements will be omitted and can be
retrieved from the <code>into_remainder</code> function of the iterator.</p>
<p>Due to each chunk having exactly <code>chunk_size</code> elements, the compiler can often optimize the
resulting code better than in the case of <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_mut" title="method slice::chunks_mut"><code>chunks_mut</code></a>.</p>
<p>See <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.rchunks_mut" title="method slice::rchunks_mut"><code>rchunks_mut</code></a> for a variant of this iterator that also returns the remainder as a
smaller chunk, and <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.chunks_exact_mut" title="method slice::chunks_exact_mut"><code>chunks_exact_mut</code></a> for the same iterator but starting at the beginning
of the slice.</p>
<h5 id="panics-16"><a class="doc-anchor" href="#panics-16">§</a>Panics</h5>
<p>Panics if <code>chunk_size</code> is zero.</p>
<h5 id="examples-50"><a class="doc-anchor" href="#examples-50">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = <span class="kw-2">&mut </span>[<span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>, <span class="number">0</span>];
<span class="kw">let </span><span class="kw-2">mut </span>count = <span class="number">1</span>;
<span class="kw">for </span>chunk <span class="kw">in </span>v.rchunks_exact_mut(<span class="number">2</span>) {
<span class="kw">for </span>elem <span class="kw">in </span>chunk.iter_mut() {
<span class="kw-2">*</span>elem += count;
}
count += <span class="number">1</span>;
}
<span class="macro">assert_eq!</span>(v, <span class="kw-2">&</span>[<span class="number">0</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">1</span>, <span class="number">1</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.chunk_by" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1824-1826">Source</a></span><h4 class="code-header">pub fn <a href="#method.chunk_by" class="fn">chunk_by</a><F>(&self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ChunkBy.html" title="struct core::slice::iter::ChunkBy">ChunkBy</a><'_, T, F><div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>, <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.bool.html">bool</a>,</div></h4></section></summary><div class="docblock"><p>Returns an iterator over the slice producing non-overlapping runs
of elements using the predicate to separate them.</p>
<p>The predicate is called for every pair of consecutive elements,
meaning that it is called on <code>slice[0]</code> and <code>slice[1]</code>,
followed by <code>slice[1]</code> and <code>slice[2]</code>, and so on.</p>
<h5 id="examples-51"><a class="doc-anchor" href="#examples-51">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">3</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunk_by(|a, b| a == b);
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">3</span>, <span class="number">3</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
<p>This method can be used to extract the sorted subslices:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = <span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunk_by(|a, b| a <= b);
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">3</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>[<span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.chunk_by_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.77.0">1.77.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1865-1867">Source</a></span><h4 class="code-header">pub fn <a href="#method.chunk_by_mut" class="fn">chunk_by_mut</a><F>(&mut self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.ChunkByMut.html" title="struct core::slice::iter::ChunkByMut">ChunkByMut</a><'_, T, F><div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>, <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.bool.html">bool</a>,</div></h4></section></summary><div class="docblock"><p>Returns an iterator over the slice producing non-overlapping mutable
runs of elements using the predicate to separate them.</p>
<p>The predicate is called for every pair of consecutive elements,
meaning that it is called on <code>slice[0]</code> and <code>slice[1]</code>,
followed by <code>slice[1]</code> and <code>slice[2]</code>, and so on.</p>
<h5 id="examples-52"><a class="doc-anchor" href="#examples-52">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>, <span class="number">3</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunk_by_mut(|a, b| a == b);
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">1</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">3</span>, <span class="number">3</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">2</span>, <span class="number">2</span>, <span class="number">2</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
<p>This method can be used to extract the sorted subslices:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = <span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.chunk_by_mut(|a, b| a <= b);
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">1</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">2</span>, <span class="number">3</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">Some</span>(<span class="kw-2">&mut </span>[<span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>][..]));
<span class="macro">assert_eq!</span>(iter.next(), <span class="prelude-val">None</span>);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_at" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1911">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_at" class="fn">split_at</a>(&self, mid: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> (&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Divides one slice into two at an index.</p>
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
the index <code>mid</code> itself) and the second will contain all
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
<h5 id="panics-17"><a class="doc-anchor" href="#panics-17">§</a>Panics</h5>
<p>Panics if <code>mid > len</code>. For a non-panicking alternative see
<a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.split_at_checked" title="method slice::split_at_checked"><code>split_at_checked</code></a>.</p>
<h5 id="examples-53"><a class="doc-anchor" href="#examples-53">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>];
{
<span class="kw">let </span>(left, right) = v.split_at(<span class="number">0</span>);
<span class="macro">assert_eq!</span>(left, []);
<span class="macro">assert_eq!</span>(right, [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>]);
}
{
<span class="kw">let </span>(left, right) = v.split_at(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(left, [<span class="string">'a'</span>, <span class="string">'b'</span>]);
<span class="macro">assert_eq!</span>(right, [<span class="string">'c'</span>]);
}
{
<span class="kw">let </span>(left, right) = v.split_at(<span class="number">3</span>);
<span class="macro">assert_eq!</span>(left, [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>]);
<span class="macro">assert_eq!</span>(right, []);
}</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_at_mut" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1945">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_at_mut" class="fn">split_at_mut</a>(&mut self, mid: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Divides one mutable slice into two at an index.</p>
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
the index <code>mid</code> itself) and the second will contain all
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
<h5 id="panics-18"><a class="doc-anchor" href="#panics-18">§</a>Panics</h5>
<p>Panics if <code>mid > len</code>. For a non-panicking alternative see
<a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.split_at_mut_checked" title="method slice::split_at_mut_checked"><code>split_at_mut_checked</code></a>.</p>
<h5 id="examples-54"><a class="doc-anchor" href="#examples-54">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>];
<span class="kw">let </span>(left, right) = v.split_at_mut(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">0</span>]);
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>]);
left[<span class="number">1</span>] = <span class="number">2</span>;
right[<span class="number">1</span>] = <span class="number">4</span>;
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_at_unchecked" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.79.0">1.79.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#1996">Source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.split_at_unchecked" class="fn">split_at_unchecked</a>(&self, mid: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> (&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Divides one slice into two at an index, without doing bounds checking.</p>
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
the index <code>mid</code> itself) and the second will contain all
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
<p>For a safe alternative see <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.split_at" title="method slice::split_at"><code>split_at</code></a>.</p>
<h5 id="safety-6"><a class="doc-anchor" href="#safety-6">§</a>Safety</h5>
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
even if the resulting reference is not used. The caller has to ensure that
<code>0 <= mid <= self.len()</code>.</p>
<h5 id="examples-55"><a class="doc-anchor" href="#examples-55">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>];
<span class="kw">unsafe </span>{
<span class="kw">let </span>(left, right) = v.split_at_unchecked(<span class="number">0</span>);
<span class="macro">assert_eq!</span>(left, []);
<span class="macro">assert_eq!</span>(right, [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>]);
}
<span class="kw">unsafe </span>{
<span class="kw">let </span>(left, right) = v.split_at_unchecked(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(left, [<span class="string">'a'</span>, <span class="string">'b'</span>]);
<span class="macro">assert_eq!</span>(right, [<span class="string">'c'</span>]);
}
<span class="kw">unsafe </span>{
<span class="kw">let </span>(left, right) = v.split_at_unchecked(<span class="number">3</span>);
<span class="macro">assert_eq!</span>(left, [<span class="string">'a'</span>, <span class="string">'b'</span>, <span class="string">'c'</span>]);
<span class="macro">assert_eq!</span>(right, []);
}</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_at_mut_unchecked" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.79.0">1.79.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#2049">Source</a></span><h4 class="code-header">pub unsafe fn <a href="#method.split_at_mut_unchecked" class="fn">split_at_mut_unchecked</a>(
&mut self,
mid: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>,
) -> (&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)</h4></section></summary><div class="docblock"><p>Divides one mutable slice into two at an index, without doing bounds checking.</p>
<p>The first will contain all indices from <code>[0, mid)</code> (excluding
the index <code>mid</code> itself) and the second will contain all
indices from <code>[mid, len)</code> (excluding the index <code>len</code> itself).</p>
<p>For a safe alternative see <a href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html#method.split_at_mut" title="method slice::split_at_mut"><code>split_at_mut</code></a>.</p>
<h5 id="safety-7"><a class="doc-anchor" href="#safety-7">§</a>Safety</h5>
<p>Calling this method with an out-of-bounds index is <em><a href="https://doc.rust-lang.org/reference/behavior-considered-undefined.html">undefined behavior</a></em>
even if the resulting reference is not used. The caller has to ensure that
<code>0 <= mid <= self.len()</code>.</p>
<h5 id="examples-56"><a class="doc-anchor" href="#examples-56">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>];
<span class="comment">// scoped to restrict the lifetime of the borrows
</span><span class="kw">unsafe </span>{
<span class="kw">let </span>(left, right) = v.split_at_mut_unchecked(<span class="number">2</span>);
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">0</span>]);
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>]);
left[<span class="number">1</span>] = <span class="number">2</span>;
right[<span class="number">1</span>] = <span class="number">4</span>;
}
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_at_checked" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.80.0">1.80.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#2110">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_at_checked" class="fn">split_at_checked</a>(&self, mid: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(&<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Divides one slice into two at an index, returning <code>None</code> if the slice is
too short.</p>
<p>If <code>mid ≤ len</code> returns a pair of slices where the first will contain all
indices from <code>[0, mid)</code> (excluding the index <code>mid</code> itself) and the
second will contain all indices from <code>[mid, len)</code> (excluding the index
<code>len</code> itself).</p>
<p>Otherwise, if <code>mid > len</code>, returns <code>None</code>.</p>
<h5 id="examples-57"><a class="doc-anchor" href="#examples-57">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>v = [<span class="number">1</span>, -<span class="number">2</span>, <span class="number">3</span>, -<span class="number">4</span>, <span class="number">5</span>, -<span class="number">6</span>];
{
<span class="kw">let </span>(left, right) = v.split_at_checked(<span class="number">0</span>).unwrap();
<span class="macro">assert_eq!</span>(left, []);
<span class="macro">assert_eq!</span>(right, [<span class="number">1</span>, -<span class="number">2</span>, <span class="number">3</span>, -<span class="number">4</span>, <span class="number">5</span>, -<span class="number">6</span>]);
}
{
<span class="kw">let </span>(left, right) = v.split_at_checked(<span class="number">2</span>).unwrap();
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, -<span class="number">2</span>]);
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, -<span class="number">4</span>, <span class="number">5</span>, -<span class="number">6</span>]);
}
{
<span class="kw">let </span>(left, right) = v.split_at_checked(<span class="number">6</span>).unwrap();
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, -<span class="number">2</span>, <span class="number">3</span>, -<span class="number">4</span>, <span class="number">5</span>, -<span class="number">6</span>]);
<span class="macro">assert_eq!</span>(right, []);
}
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.split_at_checked(<span class="number">7</span>));</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split_at_mut_checked" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.80.0">1.80.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#2149">Source</a></span><h4 class="code-header">pub fn <a href="#method.split_at_mut_checked" class="fn">split_at_mut_checked</a>(
&mut self,
mid: <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.usize.html">usize</a>,
) -> <a class="enum" href="https://doc.rust-lang.org/1.85.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><(&mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>, &mut <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.slice.html">[T]</a>)></h4></section></summary><div class="docblock"><p>Divides one mutable slice into two at an index, returning <code>None</code> if the
slice is too short.</p>
<p>If <code>mid ≤ len</code> returns a pair of slices where the first will contain all
indices from <code>[0, mid)</code> (excluding the index <code>mid</code> itself) and the
second will contain all indices from <code>[mid, len)</code> (excluding the index
<code>len</code> itself).</p>
<p>Otherwise, if <code>mid > len</code>, returns <code>None</code>.</p>
<h5 id="examples-58"><a class="doc-anchor" href="#examples-58">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span><span class="kw-2">mut </span>v = [<span class="number">1</span>, <span class="number">0</span>, <span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>];
<span class="kw">if let </span><span class="prelude-val">Some</span>((left, right)) = v.split_at_mut_checked(<span class="number">2</span>) {
<span class="macro">assert_eq!</span>(left, [<span class="number">1</span>, <span class="number">0</span>]);
<span class="macro">assert_eq!</span>(right, [<span class="number">3</span>, <span class="number">0</span>, <span class="number">5</span>, <span class="number">6</span>]);
left[<span class="number">1</span>] = <span class="number">2</span>;
right[<span class="number">1</span>] = <span class="number">4</span>;
}
<span class="macro">assert_eq!</span>(v, [<span class="number">1</span>, <span class="number">2</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>]);
<span class="macro">assert_eq!</span>(<span class="prelude-val">None</span>, v.split_at_mut_checked(<span class="number">7</span>));</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.split" class="method"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.85.0/src/core/slice/mod.rs.html#2201-2203">Source</a></span><h4 class="code-header">pub fn <a href="#method.split" class="fn">split</a><F>(&self, pred: F) -> <a class="struct" href="https://doc.rust-lang.org/1.85.0/core/slice/iter/struct.Split.html" title="struct core::slice::iter::Split">Split</a><'_, T, F><div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.85.0/core/ops/function/trait.FnMut.html" title="trait core::ops::function::FnMut">FnMut</a>(<a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.reference.html">&T</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.85.0/core/primitive.bool.html">bool</a>,</div></h4></section></summary><div class="docblock"><p>Returns an iterator over subslices separated by elements that match
<code>pred</code>. The matched element is not contained in the subslices.</p>
<h5 id="examples-59"><a class="doc-anchor" href="#examples-59">§</a>Examples</h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>, <span class="number">20</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.split(|num| num % <span class="number">3 </span>== <span class="number">0</span>);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">20</span>]);
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
<p>If the first element is matched, an empty slice will be the first item
returned by the iterator. Similarly, if the last element in the slice
is matched, an empty slice will be the last item returned by the
iterator:</p>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>slice = [<span class="number">10</span>, <span class="number">40</span>, <span class="number">33</span>];
<span class="kw">let </span><span class="kw-2">mut </span>iter = slice.split(|num| num % <span class="number">3 </span>== <span class="number">0</span>);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[<span class="number">10</span>, <span class="number">40</span>]);
<span class="macro">assert_eq!</span>(iter.next().unwrap(), <span class="kw-2">&</span>[]);
<span class="macro">assert!</span>(iter.next().is_none());</code></pre></div>
<p>If two matched elements are directly adjacent, an empty slice will be
present between them:</p>