```rust extern crate doubly;
use doubly::DoublyLinkedList;
fn main() { let mylist: DoublyLinkedList = DoublyLinkedList::newempty();
for k in 1..999999 { my_list.push_back(k); } my_list[7] = 85; for k in my_list.iter().take(10) { println!("{}", k); }
} ```