use_moved_x.rs

fn use_v() {
  let v = make_v();
  print_v(v); // error! use of moved value: `v`
  print_v(v); // value used here after move
}

fn print_v(v: Vec<i32>) {
  println!("{}", v[0]);
}

fn make_v() -> Vec<i32> {
  let v = vec![2, 4];
  v
}