Implement DoubleEndedIterator for Unwrap when appropriate.

sfackler · Aug 18, 2023 · 3e3d205 · 3e3d205
1 parent 485e1f8
commit 3e3d205
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -2640,6 +2640,17 @@ where
     }
 }
 
+impl<T> iter::DoubleEndedIterator for Unwrap<T>
+where
+    T: DoubleEndedFallibleIterator,
+    T::Error: core::fmt::Debug,
+{
+    #[inline]
+    fn next_back(&mut self) -> Option<T::Item> {
+        self.0.next_back().unwrap()
+    }
+}
+
 fn _is_object_safe(_: &dyn DoubleEndedFallibleIterator<Item = (), Error = ()>) {}
 
 /// An extnsion-trait with set of useful methods to convert [`core::iter::Iterator`]