#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    let a = [1, 2, 3];
    let (even, odd): (Vec<_>, Vec<_>) = a.into_iter().partition(|n| n % 2 == 0);
    assert_eq!(even, [2]);
    assert_eq!(odd, [1, 3]);
}