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90 lines
1.6 KiB
Rust
90 lines
1.6 KiB
Rust
use std::io;
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trait Show {
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fn show(&self) -> String;
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}
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impl Show for i32 {
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fn show(&self) -> String {
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format!("four-byte signed {}", self)
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}
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}
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impl Show for f64 {
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fn show(&self) -> String {
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format!("eight-byte float {}", self)
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}
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}
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fn another_function(x: i32, y: i32) {
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println!("The value of x is: {}, y {}", x, y);
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}
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fn fun1(x: i32, y: i32) {
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println!("The value of x is: {}, y {}", x, y);
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}
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impl<Iter> Iterator for Iter
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where Iter: Iterator,
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{
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type Item = i32;
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fn next(&mut self) -> Option<i32> {
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Some(42)
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}
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}
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fn add(left: i32, right: i32) -> i32 {
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return left + right;
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}
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fn add4(left: i32, right: i32, t: i32, f: i32) -> i32 {
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return left + right + t + f;
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}
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struct Foo<'a> {
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x: &'a i32,
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}
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struct Boo<'b> {
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x: &'b i32,
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}
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const CAMEL_CASE: i32 = 42;
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fn bug(left: i32, rigth: i32) -> i32 {
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return left;
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}
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fn test_signature(a: i32, b: i32, c: i32) -> i32 {
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a + b - c
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}
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fn test(a: i32) {}
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fn test2() {
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test(1)
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}
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fn test3() {
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test(1);
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test2()
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}
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fn main() {
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test_signature(1, 2, 3);
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let x = || 42;
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bug(x(), 32);
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bug(x(), 32);
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add(add(1, 2), 3);
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add(add(1, 2), 3);
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let answer = 42;
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let maybe_pi = 3.14;
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let v: Vec<&Show> = vec![&answer, &maybe_pi];
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for d in v.iter() {
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println!("show {}", d.show());
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}
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add4(1, 2, 3, add(1, 2));
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add4(add(1, 2), 3, add(3, 4), 4);
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let y = &5; // this is the same as `let _y = 5; let y = &_y;`
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let f = Foo { x: y };
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let z = &5; // this is the same as `let _y = 5; let y = &_y;`
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let f22 = Boo { x: z };
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another_function(11, 2);
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}
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