fn main() {
    let iterator = (0..);
    let v: Vec<_> = iterator.clone().skip(2).take(3).collect();
    assert_eq!(vec![2, 3, 4], v);
    let v: Vec<_> = iterator.clone().skip(1).take(3).collect();
    assert_eq!(vec![1, 2, 3], v);
}