diff options
Diffstat (limited to 'library/core/src/result.rs')
| -rw-r--r-- | library/core/src/result.rs | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/library/core/src/result.rs b/library/core/src/result.rs index 1ee270f4c..6981abc9b 100644 --- a/library/core/src/result.rs +++ b/library/core/src/result.rs @@ -749,7 +749,7 @@ impl<T, E> Result<T, E> { } /// Returns the provided default (if [`Err`]), or - /// applies a function to the contained value (if [`Ok`]), + /// applies a function to the contained value (if [`Ok`]). /// /// Arguments passed to `map_or` are eagerly evaluated; if you are passing /// the result of a function call, it is recommended to use [`map_or_else`], @@ -768,6 +768,7 @@ impl<T, E> Result<T, E> { /// ``` #[inline] #[stable(feature = "result_map_or", since = "1.41.0")] + #[must_use = "if you don't need the returned value, use `if let` instead"] pub fn map_or<U, F: FnOnce(T) -> U>(self, default: U, f: F) -> U { match self { Ok(t) => f(t), |