#![allow(unused_variables)]
#![feature(vec_deque_iter_as_slices)]
fn main() {
    use std::collections::VecDeque;
    let mut deque = VecDeque::new();
    deque.push_back(0);
    deque.push_back(1);
    deque.push_back(2);
    deque.push_front(10);
    deque.push_front(9);
    deque.push_front(8);
    let mut iter = deque.iter_mut();
    iter.next();
    iter.next_back();
    assert_eq!(iter.as_slices(), (& [9, 10] [..], & [0, 1] [..]));
}