#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    let slice = [10, 40, 33];
    let mut iter = slice.split(|num| num % 3 == 0);
    assert_eq!(iter.next().unwrap(), & [10, 40]);
    assert_eq!(iter.next().unwrap(), & []);
    assert!(iter.next().is_none());
}