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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/needless_collect.txt | |
parent | Adding upstream version 1.64.0+dfsg1. (diff) | |
download | rustc-17d40c6057c88f4c432b0d7bac88e1b84cb7e67f.tar.xz rustc-17d40c6057c88f4c432b0d7bac88e1b84cb7e67f.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/needless_collect.txt')
-rw-r--r-- | src/tools/clippy/src/docs/needless_collect.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/tools/clippy/src/docs/needless_collect.txt b/src/tools/clippy/src/docs/needless_collect.txt new file mode 100644 index 000000000..275c39afc --- /dev/null +++ b/src/tools/clippy/src/docs/needless_collect.txt @@ -0,0 +1,14 @@ +### What it does +Checks for functions collecting an iterator when collect +is not needed. + +### Why is this bad? +`collect` causes the allocation of a new data structure, +when this allocation may not be needed. + +### Example +``` +let len = iterator.clone().collect::<Vec<_>>().len(); +// should be +let len = iterator.count(); +```
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