mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-15 10:07:30 +00:00
24 lines
649 B
Rust
24 lines
649 B
Rust
// run-rustfix
|
|
#![warn(clippy::map_identity)]
|
|
#![allow(clippy::needless_return)]
|
|
|
|
fn main() {
|
|
let x: [u16; 3] = [1, 2, 3];
|
|
// should lint
|
|
let _: Vec<_> = x.iter().map(not_identity).collect();
|
|
let _: Vec<_> = x.iter().collect();
|
|
let _: Option<u8> = Some(3);
|
|
let _: Result<i8, f32> = Ok(-3);
|
|
// should not lint
|
|
let _: Vec<_> = x.iter().map(|x| 2 * x).collect();
|
|
let _: Vec<_> = x.iter().map(not_identity).map(|x| return x - 4).collect();
|
|
let _: Option<u8> = None.map(|x: u8| x - 1);
|
|
let _: Result<i8, f32> = Err(2.3).map(|x: i8| {
|
|
return x + 3;
|
|
});
|
|
}
|
|
|
|
fn not_identity(x: &u16) -> u16 {
|
|
*x
|
|
}
|