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error: unnecessary use of `first().is_some()` to check if slice is not empty
--> tests/ui/unnecessary_first_then_check.rs:6:19
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LL | let _: bool = s.first().is_some();
| ^^^^^^^^^^^^^^^^^^^ help: replace this with: `!s.is_empty()`
|
= note: `-D clippy::unnecessary-first-then-check` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::unnecessary_first_then_check)]`
error: unnecessary use of `first().is_none()` to check if slice is empty
--> tests/ui/unnecessary_first_then_check.rs:8:21
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LL | let _: bool = s.first().is_none();
| ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()`
error: unnecessary use of `first().is_some()` to check if slice is not empty
--> tests/ui/unnecessary_first_then_check.rs:12:19
|
LL | let _: bool = v.first().is_some();
| ^^^^^^^^^^^^^^^^^^^ help: replace this with: `!v.is_empty()`
error: unnecessary use of `first().is_some()` to check if slice is not empty
--> tests/ui/unnecessary_first_then_check.rs:16:19
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LL | let _: bool = n[0].first().is_some();
| ^^^^^^^^^^^^^^^^^^^^^^ help: replace this with: `!n[0].is_empty()`
error: unnecessary use of `first().is_none()` to check if slice is empty
--> tests/ui/unnecessary_first_then_check.rs:18:24
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LL | let _: bool = n[0].first().is_none();
| ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()`
error: unnecessary use of `first().is_some()` to check if slice is not empty
--> tests/ui/unnecessary_first_then_check.rs:25:19
|
LL | let _: bool = f[0].bar.first().is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace this with: `!f[0].bar.is_empty()`
error: unnecessary use of `first().is_none()` to check if slice is empty
--> tests/ui/unnecessary_first_then_check.rs:27:28
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LL | let _: bool = f[0].bar.first().is_none();
| ^^^^^^^^^^^^^^^^^ help: replace this with: `is_empty()`
error: aborting due to 7 previous errors
|
