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update at 2020-08-25 10:23:43 by ehlxr

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ehlxr 2020-08-25 10:23:43 +08:00
parent 92a5176f5d
commit 86488c2534
1 changed files with 3 additions and 12 deletions
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15
src/main.rs
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@ -916,7 +916,7 @@ fn main() {
Box::new(|x| x + 1) Box::new(|x| x + 1)
} }
let rc = returns_closure(); let rc = returns_closure();
println!("{}", rc(12)); // println!("{}", rc(12));
// --------------------------- // ---------------------------
println!("---------------------------"); println!("---------------------------");
@ -958,11 +958,11 @@ fn main() {
for c in hello.chars() { for c in hello.chars() {
print!("{} ", c); print!("{} ", c);
} }
println!("");
for b in hello.bytes() { for b in hello.bytes() {
print!("{} ", b); print!("{} ", b);
} }
println!("");
// let s = hello[1]; // Rust 的字符串不支持索引 // let s = hello[1]; // Rust 的字符串不支持索引
// 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 // 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
println!("{}", &hello[0..3]); println!("{}", &hello[0..3]);
@ -1085,15 +1085,6 @@ impl<T, U> Point1<T, U> {
fn mixup<V, W>(self, p: Point1<V, W>) -> Point1<T, W> { fn mixup<V, W>(self, p: Point1<V, W>) -> Point1<T, W> {
Point1 { x: self.x, y: p.y } Point1 { x: self.x, y: p.y }
} }
let nms = vec![String::from("Blue"), String::from("Yellow")];
let x4 = &[String::from("Blue"), String::from("Yellow")];
println!("{:?} {:?}", nms, x4);
// let a = [1, 2, 3, 4, 5];
let slice = &[1,2];
} }
fn test_tuple(t: (i32, &str)) { fn test_tuple(t: (i32, &str)) {