77 lines
1.3 KiB
Rust
77 lines
1.3 KiB
Rust
// run-pass
|
|
#![allow(dead_code)]
|
|
#![allow(unused_assignments)]
|
|
#![allow(non_camel_case_types)]
|
|
#![allow(non_shorthand_field_patterns)]
|
|
|
|
trait Foo {
|
|
fn foo(&self, mut x: isize) -> isize {
|
|
let val = x;
|
|
x = 37 * x;
|
|
val + x
|
|
}
|
|
}
|
|
|
|
struct X;
|
|
impl Foo for X {}
|
|
|
|
pub fn main() {
|
|
let (a, mut b) = (23, 4);
|
|
assert_eq!(a, 23);
|
|
assert_eq!(b, 4);
|
|
b = a + b;
|
|
assert_eq!(b, 27);
|
|
|
|
|
|
assert_eq!(X.foo(2), 76);
|
|
|
|
enum Bar {
|
|
Foo(isize),
|
|
Baz(f32, u8)
|
|
}
|
|
|
|
let (x, mut y) = (32, Bar::Foo(21));
|
|
|
|
match x {
|
|
mut z @ 32 => {
|
|
assert_eq!(z, 32);
|
|
z = 34;
|
|
assert_eq!(z, 34);
|
|
}
|
|
_ => {}
|
|
}
|
|
|
|
check_bar(&y);
|
|
y = Bar::Baz(10.0, 3);
|
|
check_bar(&y);
|
|
|
|
fn check_bar(y: &Bar) {
|
|
match y {
|
|
&Bar::Foo(a) => {
|
|
assert_eq!(a, 21);
|
|
}
|
|
&Bar::Baz(a, b) => {
|
|
assert_eq!(a, 10.0);
|
|
assert_eq!(b, 3);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn foo1((x, mut y): (f64, isize), mut z: isize) -> isize {
|
|
y = 2 * 6;
|
|
z = y + (x as isize);
|
|
y - z
|
|
}
|
|
|
|
struct A {
|
|
x: isize
|
|
}
|
|
let A { x: mut x } = A { x: 10 };
|
|
assert_eq!(x, 10);
|
|
x = 30;
|
|
assert_eq!(x, 30);
|
|
|
|
(|A { x: mut t }: A| { t = t+1; t })(A { x: 34 });
|
|
|
|
}
|