update at 2020-08-25 10:23:43 by ehlxr
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parent
92a5176f5d
commit
86488c2534
15
src/main.rs
15
src/main.rs
@ -916,7 +916,7 @@ fn main() {
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Box::new(|x| x + 1)
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}
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let rc = returns_closure();
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println!("{}", rc(12));
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// println!("{}", rc(12));
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// ---------------------------
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println!("---------------------------");
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@ -958,11 +958,11 @@ fn main() {
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for c in hello.chars() {
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print!("{} ", c);
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}
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println!("");
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for b in hello.bytes() {
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print!("{} ", b);
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}
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println!("");
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// let s = hello[1]; // Rust 的字符串不支持索引
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// let s = &hello[0..4]; // thread 'main' panicked at 'byte index 4 is not a char boundary; it is inside '试' (bytes 3..6) of `测试中文字符串`', src/libcore/str/mod.rs:2219:5
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println!("{}", &hello[0..3]);
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@ -1085,15 +1085,6 @@ impl<T, U> Point1<T, U> {
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fn mixup<V, W>(self, p: Point1<V, W>) -> Point1<T, W> {
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Point1 { x: self.x, y: p.y }
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}
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let nms = vec![String::from("Blue"), String::from("Yellow")];
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let x4 = &[String::from("Blue"), String::from("Yellow")];
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println!("{:?} {:?}", nms, x4);
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// let a = [1, 2, 3, 4, 5];
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let slice = &[1,2];
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}
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fn test_tuple(t: (i32, &str)) {
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