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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:03:36 +0000 |
commit | 17d40c6057c88f4c432b0d7bac88e1b84cb7e67f (patch) | |
tree | 3f66c4a5918660bb8a758ab6cda5ff8ee4f6cdcd /src/tools/clippy/src/docs/match_as_ref.txt | |
parent | Adding upstream version 1.64.0+dfsg1. (diff) | |
download | rustc-upstream/1.65.0+dfsg1.tar.xz rustc-upstream/1.65.0+dfsg1.zip |
Adding upstream version 1.65.0+dfsg1.upstream/1.65.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/clippy/src/docs/match_as_ref.txt')
-rw-r--r-- | src/tools/clippy/src/docs/match_as_ref.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/tools/clippy/src/docs/match_as_ref.txt b/src/tools/clippy/src/docs/match_as_ref.txt new file mode 100644 index 000000000..5e5f3d645 --- /dev/null +++ b/src/tools/clippy/src/docs/match_as_ref.txt @@ -0,0 +1,23 @@ +### What it does +Checks for match which is used to add a reference to an +`Option` value. + +### Why is this bad? +Using `as_ref()` or `as_mut()` instead is shorter. + +### Example +``` +let x: Option<()> = None; + +let r: Option<&()> = match x { + None => None, + Some(ref v) => Some(v), +}; +``` + +Use instead: +``` +let x: Option<()> = None; + +let r: Option<&()> = x.as_ref(); +```
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