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https://github.com/rust-lang/rust-clippy
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47 lines
2 KiB
Text
47 lines
2 KiB
Text
error: unnecessary use of `first().is_some()` to check if slice is not empty
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--> tests/ui/unnecessary_first_then_check.rs:6:19
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LL | let _: bool = s.first().is_some();
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| ^^^^^^^^^^^^^^^^^^^ help: replace this with: `!s.is_empty()`
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= note: `-D clippy::unnecessary-first-then-check` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::unnecessary_first_then_check)]`
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error: unnecessary use of `first().is_none()` to check if slice is empty
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--> tests/ui/unnecessary_first_then_check.rs:7:21
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LL | let _: bool = s.first().is_none();
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| ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()`
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error: unnecessary use of `first().is_some()` to check if slice is not empty
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--> tests/ui/unnecessary_first_then_check.rs:10:19
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LL | let _: bool = v.first().is_some();
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| ^^^^^^^^^^^^^^^^^^^ help: replace this with: `!v.is_empty()`
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error: unnecessary use of `first().is_some()` to check if slice is not empty
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--> tests/ui/unnecessary_first_then_check.rs:13:19
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LL | let _: bool = n[0].first().is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^ help: replace this with: `!n[0].is_empty()`
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error: unnecessary use of `first().is_none()` to check if slice is empty
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--> tests/ui/unnecessary_first_then_check.rs:14:24
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LL | let _: bool = n[0].first().is_none();
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| ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()`
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error: unnecessary use of `first().is_some()` to check if slice is not empty
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--> tests/ui/unnecessary_first_then_check.rs:20:19
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LL | let _: bool = f[0].bar.first().is_some();
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace this with: `!f[0].bar.is_empty()`
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error: unnecessary use of `first().is_none()` to check if slice is empty
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--> tests/ui/unnecessary_first_then_check.rs:21:28
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LL | let _: bool = f[0].bar.first().is_none();
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| ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()`
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error: aborting due to 7 previous errors
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