chore: rust day day up

Author: MuYunyun

README.md

@@ -1 +1 @@
-{"rustc_fingerprint":3299840891311980700,"outputs":{"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/mac/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0 (fc594f156 2023-01-24)\nbinary: rustc\ncommit-hash: fc594f15669680fa70d255faec3ca3fb507c3405\ncommit-date: 2023-01-24\nhost: x86_64-apple-darwin\nrelease: 1.67.0\nLLVM version: 15.0.6\n","stderr":""},"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""}},"successes":{}}
+{"rustc_fingerprint":3299840891311980700,"outputs":{"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0 (fc594f156 2023-01-24)\nbinary: rustc\ncommit-hash: fc594f15669680fa70d255faec3ca3fb507c3405\ncommit-date: 2023-01-24\nhost: x86_64-apple-darwin\nrelease: 1.67.0\nLLVM version: 15.0.6\n","stderr":""},"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/mac/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""},"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""}},"successes":{}}

guessing_game/target/.rustc_info.json

@@ -1 +1 @@
-{"rustc_fingerprint":3299840891311980700,"outputs":{"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0 (fc594f156 2023-01-24)\nbinary: rustc\ncommit-hash: fc594f15669680fa70d255faec3ca3fb507c3405\ncommit-date: 2023-01-24\nhost: x86_64-apple-darwin\nrelease: 1.67.0\nLLVM version: 15.0.6\n","stderr":""},"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/mac/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""}},"successes":{}}
+{"rustc_fingerprint":3299840891311980700,"outputs":{"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0 (fc594f156 2023-01-24)\nbinary: rustc\ncommit-hash: fc594f15669680fa70d255faec3ca3fb507c3405\ncommit-date: 2023-01-24\nhost: x86_64-apple-darwin\nrelease: 1.67.0\nLLVM version: 15.0.6\n","stderr":""},"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""},"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/mac/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""}},"successes":{}}

hello_cargo/target/.rustc_info.json

@@ -1 +1 @@
-{"rustc_fingerprint":3299840891311980700,"outputs":{"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0 (fc594f156 2023-01-24)\nbinary: rustc\ncommit-hash: fc594f15669680fa70d255faec3ca3fb507c3405\ncommit-date: 2023-01-24\nhost: x86_64-apple-darwin\nrelease: 1.67.0\nLLVM version: 15.0.6\n","stderr":""},"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/mac/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""}},"successes":{}}
+{"rustc_fingerprint":3299840891311980700,"outputs":{"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0 (fc594f156 2023-01-24)\nbinary: rustc\ncommit-hash: fc594f15669680fa70d255faec3ca3fb507c3405\ncommit-date: 2023-01-24\nhost: x86_64-apple-darwin\nrelease: 1.67.0\nLLVM version: 15.0.6\n","stderr":""},"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""},"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/mac/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""}},"successes":{}}

test_demo/target/.rustc_info.json

@@ -1,3 +1,69 @@
-fn main() {
-    println!("Hello, world!");
+// 实现一：确保此 largest 函数只会被那些实现了 PartialOrd 与 Copy trait 的类型所调用。
+// fn largest<T: PartialOrd + Copy>(list: &[T]) -> T {
+//     let mut largest = list[0];
+
+//     for &item in list.iter() {
+//         if item > largest {
+//             largest = item;
+//         }
+//     }
+
+//     largest
+// }
+
+// fn main() {
+//     let number_list = vec![34, 50, 25, 100, 65];
+//     let result = largest(&number_list);
+//     println!("The largest number is {}", result);
+
+//     let char_list = vec!['y', 'm', 'a', 'q'];
+//     let result = largest(&char_list);
+//     println!("The largest char is {}", result);
+// }
+
+// 扩展一，如果不希望 largest 函数只能使用那些实现了 Copy trait 的类型，也可以使用 Clone 来替换 T trait 约束中的 Copy。
+// 但是从性能角度来看，如果 vec 动态数组中存放着类似 String 等存放在堆上的类型是，不断的 clone 相对实现一性能会差一些。
+// fn largest<T: PartialOrd + Clone>(list: &[T]) -> T {
+//     let mut largest = list[0].clone();
+
+//     for item in list.iter() {
+//         if item > &largest {
+//             largest = item.clone();
+//         }
+//     }
+
+//     largest
+// }
+
+// fn main() {
+//     let number_list = vec![34, 50, 25, 100, 65];
+//     let result = largest(&number_list);
+//     println!("The largest number is {}", result);
+
+//     let char_list = vec!['y', 'm', 'a', 'q'];
+//     let result = largest(&char_list);
+//     println!("The largest char is {}", result);
+// }
+
+// 扩展二，将返回类型从 T 更改为 &T，同时修改函数体为一个引用，就无需再使用 Copy 或者 Clone 来进行 trait 约束了。
+fn largest<T: PartialOrd>(list: &[T]) -> &T {
+    let mut largest = &list[0];
+
+    for item in list.iter() {
+        if item > largest {
+            largest = &item;
+        }
+    }
+
+    largest
 }
+
+fn main() {
+    let number_list = vec![34, 50, 25, 100, 65];
+    let result = largest(&number_list);
+    println!("The largest number is {}", result);
+
+    let char_list = vec!['y', 'm', 'a', 'q'];
+    let result = largest(&char_list);
+    println!("The largest char is {}", result);
+}

trait_case/Cargo.lock

@@ -0,0 +1 @@
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trait_case/src/main.rs

@@ -0,0 +1,3 @@
+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

trait_case/target/.rustc_info.json

@@ -0,0 +1 @@
+This file has an mtime of when this was started.

trait_case/target/CACHEDIR.TAG

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+930c1f1ff70b8a86

trait_case/target/debug/.cargo-lock

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trait_case/target/debug/.fingerprint/trait_case-481709ac33e1bf03/dep-test-bin-trait_case

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+2800df4f438eb063

trait_case/target/debug/.fingerprint/trait_case-481709ac33e1bf03/invoked.timestamp

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trait_case/target/debug/.fingerprint/trait_case-481709ac33e1bf03/test-bin-trait_case

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+This file has an mtime of when this was started.

trait_case/target/debug/.fingerprint/trait_case-481709ac33e1bf03/test-bin-trait_case.json

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+27c2c9738cb558a6

trait_case/target/debug/.fingerprint/trait_case-a2eef4633f2a555b/bin-trait_case

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trait_case/target/debug/.fingerprint/trait_case-a2eef4633f2a555b/bin-trait_case.json

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+This file has an mtime of when this was started.

trait_case/target/debug/.fingerprint/trait_case-a2eef4633f2a555b/dep-bin-trait_case

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+/Users/mac/Developer/project/demos-of-rust/trait_case/target/debug/deps/trait_case-481709ac33e1bf03.rmeta: src/main.rs
+
+/Users/mac/Developer/project/demos-of-rust/trait_case/target/debug/deps/trait_case-481709ac33e1bf03.d: src/main.rs
+
+src/main.rs:

trait_case/target/debug/.fingerprint/trait_case-a2eef4633f2a555b/invoked.timestamp

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+/Users/mac/Developer/project/demos-of-rust/trait_case/target/debug/deps/trait_case-a2eef4633f2a555b.rmeta: src/main.rs
+
+/Users/mac/Developer/project/demos-of-rust/trait_case/target/debug/deps/trait_case-a2eef4633f2a555b.d: src/main.rs
+
+src/main.rs:

trait_case/target/debug/.fingerprint/trait_case-e8b8360062f71172/bin-trait_case

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+/Users/mac/Developer/project/demos-of-rust/trait_case/target/debug/deps/trait_case-e8b8360062f71172: src/main.rs
+
+/Users/mac/Developer/project/demos-of-rust/trait_case/target/debug/deps/trait_case-e8b8360062f71172.d: src/main.rs
+
+src/main.rs:

trait_case/target/debug/.fingerprint/trait_case-e8b8360062f71172/bin-trait_case.json

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+/Users/mac/Developer/project/demos-of-rust/trait_case/target/debug/trait_case: /Users/mac/Developer/project/demos-of-rust/trait_case/src/main.rs