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|
// 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 });
}
|
