rust-clippy/tests/ui/bind_instead_of_map.stderr
Aleksei Latyshev 07f1edf2d4
improve and generalize option_and_then_some lint
- rename it to bind_instead_of_map
2020-05-17 12:17:03 +03:00

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Text

error: using `Option.and_then(Some)`, which is a no-op
--> $DIR/bind_instead_of_map.rs:8:13
|
LL | let _ = x.and_then(Some);
| ^^^^^^^^^^^^^^^^ help: use the expression directly: `x`
|
note: the lint level is defined here
--> $DIR/bind_instead_of_map.rs:2:9
|
LL | #![deny(clippy::bind_instead_of_map)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: using `Option.and_then(|x| Some(y))`, which is more succinctly expressed as `map(|x| y)`
--> $DIR/bind_instead_of_map.rs:9:13
|
LL | let _ = x.and_then(|o| Some(o + 1));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `x.map(|o| o + 1)`
error: using `Result.and_then(Ok)`, which is a no-op
--> $DIR/bind_instead_of_map.rs:15:13
|
LL | let _ = x.and_then(Ok);
| ^^^^^^^^^^^^^^ help: use the expression directly: `x`
error: aborting due to 3 previous errors