81 lines
1.6 KiB
Rust
81 lines
1.6 KiB
Rust
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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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trait Foo {
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fn foo(&self, mut x: int) -> int {
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let val = x;
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x = 37 * x;
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val + x
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}
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}
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struct X;
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impl Foo for X {}
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pub fn main() {
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let (a, mut b) = (23, 4);
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assert_eq!(a, 23);
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assert_eq!(b, 4);
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b = a + b;
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assert_eq!(b, 27);
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assert_eq!(X.foo(2), 76);
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enum Bar {
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Foo(int),
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Baz(f32, u8)
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}
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let (x, mut y) = (32, Foo(21));
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match x {
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mut z @ 32 => {
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assert_eq!(z, 32);
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z = 34;
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assert_eq!(z, 34);
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}
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_ => {}
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}
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check_bar(&y);
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y = Baz(10.0, 3);
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check_bar(&y);
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fn check_bar(y: &Bar) {
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match y {
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&Foo(a) => {
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assert_eq!(a, 21);
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}
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&Baz(a, b) => {
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assert_eq!(a, 10.0);
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assert_eq!(b, 3);
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}
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}
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}
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fn foo1((x, mut y): (f64, int), mut z: int) -> int {
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y = 2 * 6;
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z = y + (x as int);
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y - z
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}
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struct A {
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x: int
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}
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let A { x: mut x } = A { x: 10 };
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assert_eq!(x, 10);
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x = 30;
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assert_eq!(x, 30);
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(|A { x: mut t }: A| { t = t+1; t })(A { x: 34 });
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}
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