71 lines
1.2 KiB
Rust
71 lines
1.2 KiB
Rust
#[warn(clippy::cmp_owned)]
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#[allow(clippy::unnecessary_operation, clippy::no_effect, unused_must_use, clippy::eq_op)]
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fn main() {
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fn with_to_string(x: &str) {
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x != "foo";
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"foo" != x;
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}
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let x = "oh";
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with_to_string(x);
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x != "foo";
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x != "foo";
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42.to_string() == "42";
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Foo == Foo;
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"abc".chars().filter(|c| *c != 'X');
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"abc".chars().filter(|c| *c != 'X');
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}
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struct Foo;
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impl PartialEq for Foo {
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// Allow this here, because it emits the lint
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// without a suggestion. This is tested in
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// `tests/ui/cmp_owned/without_suggestion.rs`
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#[allow(clippy::cmp_owned)]
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fn eq(&self, other: &Self) -> bool {
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self.to_owned() == *other
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}
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}
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impl ToOwned for Foo {
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type Owned = Bar;
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fn to_owned(&self) -> Bar {
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Bar
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}
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}
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#[derive(PartialEq, Eq)]
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struct Bar;
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impl PartialEq<Foo> for Bar {
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fn eq(&self, _: &Foo) -> bool {
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true
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}
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}
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impl std::borrow::Borrow<Foo> for Bar {
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fn borrow(&self) -> &Foo {
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static FOO: Foo = Foo;
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&FOO
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}
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}
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#[derive(PartialEq, Eq)]
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struct Baz;
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impl ToOwned for Baz {
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type Owned = Baz;
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fn to_owned(&self) -> Baz {
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Baz
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}
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}
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