rust/src/test/run-pass/swap-2.rs
2011-08-03 10:55:59 -07:00

12 lines
293 B
Rust

fn swap[@T](v: &vec[mutable T], i: int, j: int) { v.(i) <-> v.(j); }
fn main() {
let a: vec[mutable int] = [mutable 0, 1, 2, 3, 4, 5, 6];
swap(a, 2, 4);
assert (a.(2) == 4);
assert (a.(4) == 2);
let n = 42;
n <-> a.(0);
assert (a.(0) == 42);
assert (n == 0);
}