diff --git a/src/libcollections/vec_deque.rs b/src/libcollections/vec_deque.rs index dbe3fec205cb2..cd18617f74c52 100644 --- a/src/libcollections/vec_deque.rs +++ b/src/libcollections/vec_deque.rs @@ -1232,9 +1232,8 @@ impl<T> VecDeque<T> { self.pop_front() } - /// Inserts an element at `index` within the `VecDeque`. Whichever - /// end is closer to the insertion point will be moved to make room, - /// and all the affected elements will be moved to new positions. + /// Inserts an element at `index` within the `VecDeque`, shifting all elements with indices + /// greater than or equal to `index` towards the back. /// /// Element at index 0 is the front of the queue. /// @@ -1243,14 +1242,19 @@ impl<T> VecDeque<T> { /// Panics if `index` is greater than `VecDeque`'s length /// /// # Examples + /// /// ``` /// use std::collections::VecDeque; /// - /// let mut buf = VecDeque::new(); - /// buf.push_back(10); - /// buf.push_back(12); - /// buf.insert(1, 11); - /// assert_eq!(Some(&11), buf.get(1)); + /// let mut vec_deque = VecDeque::new(); + /// vec_deque.push_back('a'); + /// vec_deque.push_back('b'); + /// vec_deque.push_back('c'); + /// + /// vec_deque.insert(1, 'd'); + /// + /// let vec = vec_deque.into_iter().collect::<Vec<_>>(); + /// assert_eq!(vec, ['a', 'd', 'b', 'c']); /// ``` #[stable(feature = "deque_extras_15", since = "1.5.0")] pub fn insert(&mut self, index: usize, value: T) {