src/test/run-pass/vec.rs

// -*- rust -*-
fn main() {
    let v: ~[int] = ~[10, 20];
    assert (v[0] == 10);
    assert (v[1] == 20);
    let mut x: int = 0;
    assert (v[x] == 10);
    assert (v[x + 1] == 20);
    x = x + 1;
    assert (v[x] == 20);
    assert (v[x - 1] == 10);
}