fn borrow_from_mut(owned: &mut T) -> &mut T { owned }
}
-impl BorrowFrom<&'static str> for str {
- fn borrow_from<'a>(owned: &'a &'static str) -> &'a str { &**owned }
+impl<'a, Sized? T> BorrowFrom<&'a T> for T {
+ fn borrow_from<'b>(owned: &'b &'a T) -> &'b T { &**owned }
+}
+
+impl<'a, Sized? T> BorrowFrom<&'a mut T> for T {
+ fn borrow_from<'b>(owned: &'b &'a mut T) -> &'b T { &**owned }
+}
+
+impl<'a, Sized? T> BorrowFromMut<&'a mut T> for T {
+ fn borrow_from_mut<'b>(owned: &'b mut &'a mut T) -> &'b mut T { &mut **owned }
}
/// A generalization of Clone to borrowed data.