Merge #292

292: make Deque::pop_{front,back}_unchecked public r=japaric a=japaric

closes #268 

Co-authored-by: Jorge Aparicio <[email protected]>

Author: bors[bot]

CHANGELOG.md

@@ -10,10 +10,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Added
 
 * Added support for AVR architecture.
-* Add Entry Api to IndexMap
-* Implement IntoIterator trait for Indexmap
-* Implement FromIterator for String
-* Add first/last API to IndexMap and IndexSet
+* Add `entry` API to `IndexMap`
+* Implement `IntoIterator` trait for `Indexmap`
+* Implement `FromIterator` for `String`
+* Add `first` and `last` methods to `IndexMap` and `IndexSet`
+* Add `pop_{front_back}_unchecked` methods to `Deque`
 
 ### Changed
 

src/deque.rs

@@ -271,12 +271,13 @@ impl<T, const N: usize> Deque<T, N> {
         }
     }
 
-    /// Removes an item from the front of the deque and returns it
+    /// Removes an item from the front of the deque and returns it, without checking that the deque
+    /// is not empty
     ///
     /// # Safety
     ///
-    /// This assumes the deque is not empty.
-    pub(crate) unsafe fn pop_front_unchecked(&mut self) -> T {
+    /// It's undefined behavior to call this on an empty deque
+    pub unsafe fn pop_front_unchecked(&mut self) -> T {
         debug_assert!(!self.is_empty());
 
         let index = self.front;
@@ -285,12 +286,13 @@ impl<T, const N: usize> Deque<T, N> {
         (self.buffer.get_unchecked_mut(index).as_ptr() as *const T).read()
     }
 
-    /// Removes an item from the back of the deque and returns it
+    /// Removes an item from the back of the deque and returns it, without checking that the deque
+    /// is not empty
     ///
     /// # Safety
     ///
-    /// This assumes the deque is not empty.
-    pub(crate) unsafe fn pop_back_unchecked(&mut self) -> T {
+    /// It's undefined behavior to call this on an empty deque
+    pub unsafe fn pop_back_unchecked(&mut self) -> T {
         debug_assert!(!self.is_empty());
 
         self.full = false;