#![warn(clippy::match_result_ok)] #![allow(dead_code)] #![allow(clippy::boxed_local, clippy::uninlined_format_args, clippy::manual_unwrap_or_default)] // Checking `if` cases fn str_to_int(x: &str) -> i32 { if let Ok(y) = x.parse() { y } else { 0 } } fn str_to_int_ok(x: &str) -> i32 { if let Ok(y) = x.parse() { y } else { 0 } } #[rustfmt::skip] fn strange_some_no_else(x: &str) -> i32 { { if let Ok(y) = x . parse() { return y; }; 0 } } // Checking `while` cases struct Wat { counter: i32, } impl Wat { fn next(&mut self) -> Result<i32, &str> { self.counter += 1; if self.counter < 5 { Ok(self.counter) } else { Err("Oh no") } } } fn base_1(x: i32) { let mut wat = Wat { counter: x }; while let Ok(a) = wat.next() { println!("{}", a); } } fn base_2(x: i32) { let mut wat = Wat { counter: x }; while let Ok(a) = wat.next() { println!("{}", a); } } fn base_3(test_func: Box<Result<i32, &str>>) { // Expected to stay as is while let Some(_b) = test_func.ok() {} } fn main() {}