rust/src/test/ui/unsized-locals/box-fnonce.rs
2019-07-27 18:56:16 +03:00

11 lines
177 B
Rust

// run-pass
fn call_it<T>(f: Box<dyn FnOnce() -> T>) -> T {
f()
}
fn main() {
let s = "hello".to_owned();
assert_eq!(&call_it(Box::new(|| s)) as &str, "hello");
}