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Remove the questionably-useful example

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This commit is contained in:
Scott McMurray 2019-06-11 21:13:48 -07:00
parent 5168f5d220
commit 0150448f1b
1 changed files with 0 additions and 22 deletions
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22
src/liballoc/collections/vec_deque.rs
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@ -2714,28 +2714,6 @@ impl<T> From<Vec<T>> for VecDeque<T> {
/// This avoids reallocating where possible, but the conditions for that are
/// strict, and subject to change, and so shouldn't be relied upon unless the
/// `Vec<T>` came from `From<VecDeque<T>>` and hasn't been reallocated.
///
/// # Examples
///
/// ```
/// use std::collections::VecDeque;
///
/// // Start with a `VecDeque<i32>`.
/// let deque: VecDeque<_> = (1..5).collect();
///
/// // Turn it into a `Vec<i32>` with no allocation needed.
/// let mut vec = Vec::from(deque);
///
/// // Modify it, being careful not to trigger reallocation.
/// vec.pop();
/// vec.push(100);
///
/// // Turn it back into a `VecDeque<i32>` with no allocation needed.
/// let ptr = vec.as_ptr();
/// let deque = VecDeque::from(vec);
/// assert_eq!(deque, [1, 2, 3, 100]);
/// assert_eq!(deque.as_slices().0.as_ptr(), ptr);
/// ```
fn from(mut other: Vec<T>) -> Self {
unsafe {
let other_buf = other.as_mut_ptr();