| #![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 |
| } |
