use std;
import std::vec;

fn main() {
  let vec[mutable int] v = [mutable 10, 20];

  assert v.(0) == 10;
  assert v.(1) == 20;

  vec::reverse(v);

  assert v.(0) == 20;
  assert v.(1) == 10;

  auto v2 = vec::reversed[int]([10, 20]);

  assert v2.(0) == 20;
  assert v2.(1) == 10;

  v.(0) = 30;

  assert v2.(0) == 20;

  // Make sure they work with 0-length vectors too.
  auto v4 = vec::reversed[int]([]);

  let vec[mutable int] v3 = vec::empty_mut();
  vec::reverse[int](v3);
}