#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    let slice = [10, 6, 33, 20];
    let mut iter = slice.split(|num| num % 3 == 0);
    assert_eq!(iter.next().unwrap(), & [10]);
    assert_eq!(iter.next().unwrap(), & []);
    assert_eq!(iter.next().unwrap(), & [20]);
    assert!(iter.next().is_none());
}