diff options
| -rw-r--r-- | src/libcore/result.rs | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/libcore/result.rs b/src/libcore/result.rs index 2080ae19366..0c0e6d291bb 100644 --- a/src/libcore/result.rs +++ b/src/libcore/result.rs @@ -1155,6 +1155,7 @@ impl<T: Deref, E> Result<T, E> { /// # Examples /// /// ``` + /// #![feature(inner_deref)] /// let x: Result<String, u32> = Ok("hello".to_string()); /// let y: Result<&str, &u32> = Ok("hello"); /// assert_eq!(x.as_deref(), y); @@ -1189,12 +1190,15 @@ impl<T: DerefMut, E> Result<T, E> { /// # Examples /// /// ``` + /// #![feature(inner_deref)] + /// let mut s = "HELLO".to_string(); /// let mut x: Result<String, u32> = Ok("hello".to_string()); - /// let y: Result<&mut str, &mut u32> = Ok("HELLO"); + /// let y: Result<&mut str, &mut u32> = Ok(&mut s); /// assert_eq!(x.as_deref_mut().map(|x| { x.make_ascii_uppercase(); x }), y); /// + /// let mut i = 42; /// let mut x: Result<String, u32> = Err(42); - /// let y: Result<&mut str, &mut u32> = Err(&42); + /// let y: Result<&mut str, &mut u32> = Err(&mut i); /// assert_eq!(x.as_deref_mut().map(|x| { x.make_ascii_uppercase(); x }), y); /// ``` pub fn as_deref_mut(&mut self) -> Result<&mut T::Target, &mut E> { |