//@aux-build:option_helpers.rs #![warn(clippy::manual_is_variant_and)] #[macro_use] extern crate option_helpers; #[rustfmt::skip] fn option_methods() { let opt = Some(1); // Check for `option.map(_).unwrap_or_default()` use. // Single line case. let _ = opt.is_some_and(|x| x > 1); // Multi-line cases. let _ = opt.is_some_and(|x| { x > 1 }); let _ = opt.is_some_and(|x| x > 1); let _ = opt .is_some_and(|x| x > 1); // won't fix because the return type of the closure is not `bool` let _ = opt.map(|x| x + 1).unwrap_or_default(); let opt2 = Some('a'); let _ = opt2.is_some_and(char::is_alphanumeric); // should lint let _ = opt_map!(opt2, |x| x == 'a').unwrap_or_default(); // should not lint } #[rustfmt::skip] fn result_methods() { let res: Result = Ok(1); // multi line cases let _ = res.is_ok_and(|x| { x > 1 }); let _ = res.is_ok_and(|x| x > 1); // won't fix because the return type of the closure is not `bool` let _ = res.map(|x| x + 1).unwrap_or_default(); let res2: Result = Ok('a'); let _ = res2.is_ok_and(char::is_alphanumeric); // should lint let _ = opt_map!(res2, |x| x == 'a').unwrap_or_default(); // should not lint } fn main() { option_methods(); result_methods(); }