ch18 パターンとマッチングの和訳を最新版に更新

rust-lang/book@19c40bf

Author: shinmili

listings/ch18-patterns-and-matching/listing-18-01/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "patterns"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch18-patterns-and-matching/listing-18-01/src/main.rs

@@ -4,16 +4,21 @@ fn main() {
     let age: Result<u8, _> = "34".parse();
 
     if let Some(color) = favorite_color {
-        println!("Using your favorite color, {}, as the background", color);
+        //       "あなたのお気に入りの色、{color}を背景色に使用します"
+        println!("Using your favorite color, {color}, as the background");
     } else if is_tuesday {
+        //       "火曜日は緑の日！"
         println!("Tuesday is green day!");
     } else if let Ok(age) = age {
         if age > 30 {
+            //       "紫を背景色に使用します"
             println!("Using purple as the background color");
         } else {
+            //       "オレンジを背景色に使用します"
             println!("Using orange as the background color");
         }
     } else {
+        //       "青を背景色に使用します"
         println!("Using blue as the background color");
     }
 }

listings/ch18-patterns-and-matching/listing-18-02/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "patterns"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch18-patterns-and-matching/listing-18-03/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "patterns"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch18-patterns-and-matching/listing-18-04/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "patterns"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch18-patterns-and-matching/listing-18-05/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "patterns"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch18-patterns-and-matching/listing-18-05/output.txt

@@ -4,14 +4,14 @@ error[E0308]: mismatched types
  --> src/main.rs:2:9
   |
 2 |     let (x, y) = (1, 2, 3);
-  |         ^^^^^^ expected a tuple with 3 elements, found one with 2 elements
+  |         ^^^^^^   --------- this expression has type `({integer}, {integer}, {integer})`
+  |         |                 (この式は型`({integer}, {integer}, {integer})`を持ちます)
+  |         |
+  |         expected a tuple with 3 elements, found one with 2 elements
+  |        (3要素のタプルを予期したのに、2要素のタプルが見つかりました)
   |
   = note: expected tuple `({integer}, {integer}, {integer})`
              found tuple `(_, _)`
 
-error: aborting due to previous error
-
 For more information about this error, try `rustc --explain E0308`.
-error: could not compile `patterns`.
-
-To learn more, run the command again with --verbose.
+error: could not compile `patterns` (bin "patterns") due to 1 previous error

listings/ch18-patterns-and-matching/listing-18-06/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "patterns"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch18-patterns-and-matching/listing-18-07/Cargo.toml

@@ -1,7 +1,6 @@
 [package]
 name = "patterns"
 version = "0.1.0"
-authors = ["Your Name <[email protected]>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]

listings/ch18-patterns-and-matching/listing-18-07/src/main.rs

@@ -1,4 +1,5 @@
 fn print_coordinates(&(x, y): &(i32, i32)) {
+    //       "現在の位置: ({}, {})"
     println!("Current location: ({}, {})", x, y);
 }