mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-24 05:33:27 +00:00
27 lines
866 B
Rust
27 lines
866 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).map(|x| return x).collect();
|
|
let _: Vec<_> = x.iter().map(std::convert::identity).map(|y| y).collect();
|
|
let _: Option<u8> = Some(3).map(|x| x);
|
|
let _: Result<i8, f32> = Ok(-3).map(|x| {
|
|
return x;
|
|
});
|
|
// 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;
|
|
});
|
|
let _: Result<u32, u32> = Ok(1).map_err(|a| a);
|
|
let _: Result<u32, u32> = Ok(1).map_err(|a: u32| a * 42);
|
|
}
|
|
|
|
fn not_identity(x: &u16) -> u16 {
|
|
*x
|
|
}
|