diff options
| author | Maybe Waffle <waffle.lapkin@gmail.com> | 2023-06-15 13:15:52 +0000 |
|---|---|---|
| committer | Maybe Waffle <waffle.lapkin@gmail.com> | 2023-07-30 10:22:23 +0000 |
| commit | 90f9640528d9ea9930a4da586a1c6079dd7e5720 (patch) | |
| tree | 1eac4efb20ae047b41f68f46d0fd4447a4c84b2d /library/core/src | |
| parent | 5a65be815211a059b08ee3b786583308377372fa (diff) | |
| download | rust-90f9640528d9ea9930a4da586a1c6079dd7e5720.tar.gz rust-90f9640528d9ea9930a4da586a1c6079dd7e5720.zip | |
Mark `map_or` as `#[must_use]`
Diffstat (limited to 'library/core/src')
| -rw-r--r-- | library/core/src/option.rs | 1 | ||||
| -rw-r--r-- | library/core/src/result.rs | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/library/core/src/option.rs b/library/core/src/option.rs index 9b6ff76b240..1020e655579 100644 --- a/library/core/src/option.rs +++ b/library/core/src/option.rs @@ -1125,6 +1125,7 @@ impl<T> Option<T> { /// ``` #[inline] #[stable(feature = "rust1", since = "1.0.0")] + #[must_use = "if you don't need the returned value, use `if let` instead"] pub fn map_or<U, F>(self, default: U, f: F) -> U where F: FnOnce(T) -> U, diff --git a/library/core/src/result.rs b/library/core/src/result.rs index 1ee270f4c03..89c0f0217e7 100644 --- a/library/core/src/result.rs +++ b/library/core/src/result.rs @@ -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), |