rust/tests/ui/pattern/usefulness/refutable-pattern-in-fn-arg.rs

fn main() {
    let f = |3: isize| println!("hello");
    //~^ ERROR refutable pattern in function argument
    //~| `_` not covered
    f(4);
}
rustc: Support irrefutable patterns in function arguments. r=nmatsakis 2012-11-07 02:41:06 +00:00			`fn main() {`
remove all kind annotations from closures 2015-02-01 17:44:15 +00:00			`let f = \|3: isize\| println!("hello");`
Migrate pattern matching 2022-12-23 20:02:23 +00:00			`//~^ ERROR refutable pattern in function argument`
			//~\| `_` not covered
rustc: Support irrefutable patterns in function arguments. r=nmatsakis 2012-11-07 02:41:06 +00:00			`f(4);`
			`}`