rust/tests/ui/functions-closures/capture-clauses-unboxed-closures.rs
2024-02-16 20:02:50 +00:00

14 lines
249 B
Rust

//@ run-pass
fn each<'a,T,F:FnMut(&'a T)>(x: &'a [T], mut f: F) {
for val in x {
f(val)
}
}
fn main() {
let mut sum = 0;
let elems = [ 1, 2, 3, 4, 5 ];
each(&elems, |val: &usize| sum += *val);
assert_eq!(sum, 15);
}