77 lines
1.3 KiB
Rust
77 lines
1.3 KiB
Rust
//@ run-pass
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#![allow(dead_code)]
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#![allow(unused_assignments)]
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#![allow(non_camel_case_types)]
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#![allow(non_shorthand_field_patterns)]
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trait Foo {
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fn foo(&self, mut x: isize) -> isize {
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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(isize),
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Baz(f32, u8)
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}
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let (x, mut y) = (32, Bar::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 = Bar::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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&Bar::Foo(a) => {
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assert_eq!(a, 21);
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}
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&Bar::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, isize), mut z: isize) -> isize {
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y = 2 * 6;
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z = y + (x as isize);
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y - z
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}
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struct A {
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x: isize
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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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