end: *const T,
}
+impl<T> IntoIter<T> {
+ /// Returns the remaining items of this iterator as a slice.
+ ///
+ /// # Examples
+ ///
+ /// ```rust
+ /// # #![feature(vec_into_iter_as_slice)]
+ /// let vec = vec!['a', 'b', 'c'];
+ /// let mut into_iter = vec.into_iter();
+ /// assert_eq!(into_iter.as_slice(), &['a', 'b', 'c']);
+ /// let _ = into_iter.next().unwrap();
+ /// assert_eq!(into_iter.as_slice(), &['b', 'c']);
+ /// ```
+ #[unstable(feature = "vec_into_iter_as_slice", issue = "35601")]
+ pub fn as_slice(&self) -> &[T] {
+ unsafe {
+ slice::from_raw_parts(self.ptr, self.len())
+ }
+ }
+}
+
#[stable(feature = "rust1", since = "1.0.0")]
unsafe impl<T: Send> Send for IntoIter<T> {}
#[stable(feature = "rust1", since = "1.0.0")]
#[stable(feature = "vec_into_iter_clone", since = "1.8.0")]
impl<T: Clone> Clone for IntoIter<T> {
fn clone(&self) -> IntoIter<T> {
- unsafe {
- slice::from_raw_parts(self.ptr, self.len()).to_owned().into_iter()
- }
+ self.as_slice().to_owned().into_iter()
}
}
assert_eq!(vec2, [5, 6]);
}
+#[test]
+fn test_into_iter_as_slice() {
+ let vec = vec!['a', 'b', 'c'];
+ let mut into_iter = vec.into_iter();
+ assert_eq!(into_iter.as_slice(), &['a', 'b', 'c']);
+ let _ = into_iter.next().unwrap();
+ assert_eq!(into_iter.as_slice(), &['b', 'c']);
+ let _ = into_iter.next().unwrap();
+ let _ = into_iter.next().unwrap();
+ assert_eq!(into_iter.as_slice(), &[]);
+}
+
#[test]
fn test_into_iter_count() {
assert_eq!(vec![1, 2, 3].into_iter().count(), 3);