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feat: add keys method to array/complex128
PR-URL: #2174 Reviewed-by: Athan Reines <[email protected]>
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‎lib/node_modules/@stdlib/array/complex128/README.md

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@license Apache-2.0
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Copyright (c) 2018 The Stdlib Authors.
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Copyright (c) 2024 The Stdlib Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
@@ -1505,6 +1505,35 @@ var str = arr.join( '/' );
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// returns '1 + 1i/2 - 2i/3 + 3i'
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```
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<a name="method-keys"></a>
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#### Complex128Array.prototype.keys()
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Returns an iterator for iterating over each index key in a typed array.
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```javascript
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var arr = new Complex128Array( 2 );
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arr.set( [ 1.0, -1.0 ], 0 );
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arr.set( [ 2.0, -2.0 ], 1 );
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var iter = arr.keys();
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var v = iter.next().value;
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// returns 0
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v = iter.next().value;
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// returns 1
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var bool = iter.next().done;
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// returns true
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```
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The returned [iterator][mdn-iterator-protocol] protocol-compliant object has the following properties:
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- **next**: function which returns an [iterator][mdn-iterator-protocol] protocol-compliant object containing the next iterated value (if one exists) assigned to a `value` property and a `done` property having a `boolean` value indicating whether the [iterator][mdn-iterator-protocol] is finished.
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- **return**: function which closes an [iterator][mdn-iterator-protocol] and returns a single (optional) argument in an [iterator][mdn-iterator-protocol] protocol-compliant object.
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<a name="method-last-index-of"></a>
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#### Complex128Array.prototype.lastIndexOf( searchElement\[, fromIndex] )
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<section class="links">
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[mdn-iterator-protocol]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol
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[@stdlib/array/typed]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/typed
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[@stdlib/array/buffer]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/array/buffer

‎lib/node_modules/@stdlib/array/complex128/benchmark/benchmark.keys.js

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2024 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var bench = require( '@stdlib/bench' );
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var isIteratorLike = require( '@stdlib/assert/is-iterator-like' );
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var pkg = require( './../package.json' ).name;
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var Complex128Array = require( './../lib' );
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// MAIN //
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bench( pkg+':keys:len=2', function benchmark( b ) {
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var iter;
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var arr;
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var i;
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arr = new Complex128Array( [ 1.0, -1.0, 2.0, -2.0 ] );
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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iter = arr.keys();
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if ( typeof iter !== 'object' ) {
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b.fail( 'should return an object' );
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}
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}
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b.toc();
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if ( !isIteratorLike( iter ) ) {
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b.fail( 'should return an iterator protocol-compliant object' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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});

‎lib/node_modules/@stdlib/array/complex128/benchmark/benchmark.keys.length.js

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2024 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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// MODULES //
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var bench = require( '@stdlib/bench' );
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var pow = require( '@stdlib/math/base/special/pow' );
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var Complex128 = require( '@stdlib/complex/float64' );
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var isIteratorLike = require('@stdlib/assert/is-iterator-like');
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var pkg = require( './../package.json' ).name;
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var Complex128Array = require( './../lib' );
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// FUNCTIONS //
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/**
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* Creates a benchmark function.
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*
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* @private
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* @param {PositiveInteger} len - array length
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* @returns {Function} benchmark function
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*/
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function createBenchmark( len ) {
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var arr;
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var i;
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arr = [];
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for ( i = 0; i < len; i++ ) {
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arr.push( new Complex128( i, i ) );
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}
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arr = new Complex128Array( arr );
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return benchmark;
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/**
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* Benchmark function.
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*
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* @private
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* @param {Benchmark} b - benchmark instance
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*/
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function benchmark( b ) {
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var iter;
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var i;
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b.tic();
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for ( i = 0; i < b.iterations; i++ ) {
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iter = arr.keys();
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if ( typeof iter !== 'object' ) {
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b.fail( 'should return an object' );
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}
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}
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b.toc();
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if ( !isIteratorLike( iter ) ) {
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b.fail( 'should return an iterator protocol-compliant object' );
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}
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b.pass( 'benchmark finished' );
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b.end();
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}
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}
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// MAIN //
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/**
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* Main execution sequence.
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*
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* @private
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*/
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function main() {
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var len;
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var min;
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var max;
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var f;
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var i;
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min = 1; // 10^min
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max = 6; // 10^max
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for ( i = min; i <= max; i++ ) {
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len = pow( 10, i );
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f = createBenchmark( len );
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bench( pkg+':keys:len='+len, f );
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}
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}
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main();

‎lib/node_modules/@stdlib/array/complex128/docs/types/index.d.ts

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/*
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* @license Apache-2.0
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*
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* Copyright (c) 2021 The Stdlib Authors.
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* Copyright (c) 2024 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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*/
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join( separator?: string ): string;
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/**
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* Returns an iterator for iterating over each index key in a typed array.
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*
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* @returns iterator
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*
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* @example
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* var arr = new Complex128Array( 2 );
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*
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* arr.set( [ 1.0, 1.0 ], 0 );
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* arr.set( [ 2.0, 2.0 ], 1 );
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*
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* var iter = arr.keys();
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*
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* var v = iter.next().value;
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* // returns 0
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*
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* v = iter.next().value;
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* // returns 1
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*
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* var bool = iter.next().done;
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* // returns true
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*/
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keys(): TypedIterator<number>;
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/**
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* Returns the last index at which a given element can be found.
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*

‎lib/node_modules/@stdlib/array/complex128/lib/main.js

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/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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* Copyright (c) 2024 The Stdlib Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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return out.join( sep );
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});
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/**
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* Returns an iterator for iterating over each index key in a typed array.
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*
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* @name keys
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* @memberof Complex128Array.prototype
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* @type {Function}
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* @throws {TypeError} `this` must be a complex number array
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* @returns {Iterator} iterator
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*
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* @example
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* var arr = new Complex128Array( 2 );
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*
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* arr.set( [ 1.0, 1.0 ], 0 );
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* arr.set( [ 2.0, 2.0 ], 1 );
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*
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* var iter = arr.keys();
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*
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* var v = iter.next().value;
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* // returns 0
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*
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* v = iter.next().value;
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* // returns 1
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*
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* var bool = iter.next().done;
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* // returns true
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*/
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setReadOnly( Complex128Array.prototype, 'keys', function keys() {
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var self;
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var iter;
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var len;
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var FLG;
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var i;
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if ( !isComplexArray( this ) ) {
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throw new TypeError( 'invalid invocation. `this` is not a complex number array.' );
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}
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self = this;
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len = this._length;
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// Initialize an iteration index:
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i = -1;
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// Create an iterator protocol-compliant object:
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iter = {};
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setReadOnly( iter, 'next', next );
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setReadOnly( iter, 'return', end );
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if ( ITERATOR_SYMBOL ) {
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setReadOnly( iter, ITERATOR_SYMBOL, factory );
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}
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return iter;
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/**
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* Returns an iterator protocol-compliant object containing the next iterated value.
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*
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* @private
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* @returns {Object} iterator protocol-compliant object
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*/
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function next() {
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i += 1;
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if ( FLG || i >= len ) {
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return {
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'done': true
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};
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}
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return {
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'value': i,
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'done': false
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};
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}
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/**
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* Finishes an iterator.
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*
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* @private
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* @param {*} [value] - value to return
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* @returns {Object} iterator protocol-compliant object
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*/
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function end( value ) {
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FLG = true;
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if ( arguments.length ) {
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return {
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'value': value,
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'done': true
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};
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}
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return {
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'done': true
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};
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}
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/**
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* Returns a new iterator.
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*
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* @private
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* @returns {Iterator} iterator
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*/
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function factory() {
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return self.keys();
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}
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});
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/**
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* Returns the last index at which a given element can be found.
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*

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