91d8a804d3
Result<T, E> has an `ok()` method that adapts a Result<T,E> into an Option<T>. It's possible to get around this adapter by writing Result<T,E>.map_or(None, Some). This lint is implemented as a new variant of the existing [`option_map_none` lint](https://github.com/rust-lang/rust-clippy/pull/2128)
17 lines
334 B
Rust
17 lines
334 B
Rust
// run-rustfix
|
|
|
|
#![warn(clippy::result_map_or_into_option)]
|
|
|
|
fn main() {
|
|
let opt: Result<u32, &str> = Ok(1);
|
|
let _ = opt.ok();
|
|
|
|
let rewrap = |s: u32| -> Option<u32> {
|
|
Some(s)
|
|
};
|
|
|
|
// A non-Some `f` arg should not emit the lint
|
|
let opt: Result<u32, &str> = Ok(1);
|
|
let _ = opt.map_or(None, rewrap);
|
|
}
|