rust-clippy/tests/ui/bind_instead_of_map.fixed
2023-08-11 14:02:28 +00:00

25 lines
695 B
Rust

#![deny(clippy::bind_instead_of_map)]
#![allow(clippy::uninlined_format_args)]
// need a main anyway, use it get rid of unused warnings too
pub fn main() {
let x = Some(5);
// the easiest cases
let _ = x;
let _ = x.map(|o| o + 1);
// and an easy counter-example
let _ = x.and_then(|o| if o < 32 { Some(o) } else { None });
// Different type
let x: Result<u32, &str> = Ok(1);
let _ = x;
}
pub fn foo() -> Option<String> {
let x = Some(String::from("hello"));
Some("hello".to_owned()).and_then(|s| Some(format!("{}{}", s, x?)))
}
pub fn example2(x: bool) -> Option<&'static str> {
Some("a").and_then(|s| Some(if x { s } else { return None }))
}