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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:32 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:32 +0000 |
commit | 4547b622d8d29df964fa2914213088b148c498fc (patch) | |
tree | 9fc6b25f3c3add6b745be9a2400a6e96140046e9 /src/tools/clippy/tests/ui/needless_collect.rs | |
parent | Releasing progress-linux version 1.66.0+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-4547b622d8d29df964fa2914213088b148c498fc.tar.xz rustc-4547b622d8d29df964fa2914213088b148c498fc.zip |
Merging upstream version 1.67.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/clippy/tests/ui/needless_collect.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/needless_collect.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/needless_collect.rs b/src/tools/clippy/tests/ui/needless_collect.rs index 8dc69bcf5..535ec8298 100644 --- a/src/tools/clippy/tests/ui/needless_collect.rs +++ b/src/tools/clippy/tests/ui/needless_collect.rs @@ -33,4 +33,33 @@ fn main() { // `BinaryHeap` doesn't have `contains` method sample.iter().collect::<BinaryHeap<_>>().len(); sample.iter().collect::<BinaryHeap<_>>().is_empty(); + + // Don't lint string from str + let _ = ["", ""].into_iter().collect::<String>().is_empty(); + + let _ = sample.iter().collect::<HashSet<_>>().is_empty(); + let _ = sample.iter().collect::<HashSet<_>>().contains(&&0); + + struct VecWrapper<T>(Vec<T>); + impl<T> core::ops::Deref for VecWrapper<T> { + type Target = Vec<T>; + fn deref(&self) -> &Self::Target { + &self.0 + } + } + impl<T> IntoIterator for VecWrapper<T> { + type IntoIter = <Vec<T> as IntoIterator>::IntoIter; + type Item = <Vec<T> as IntoIterator>::Item; + fn into_iter(self) -> Self::IntoIter { + self.0.into_iter() + } + } + impl<T> FromIterator<T> for VecWrapper<T> { + fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self { + Self(Vec::from_iter(iter)) + } + } + + let _ = sample.iter().collect::<VecWrapper<_>>().is_empty(); + let _ = sample.iter().collect::<VecWrapper<_>>().contains(&&0); } |