//@ run-pass
fn each<T, F>(x: &[T], mut f: F) where F: FnMut(&T) {
for val in x {
f(val)
}
fn main() {
let mut sum = 0_usize;
let elems = [ 1_usize, 2, 3, 4, 5 ];
each(&elems, |val| sum += *val);
assert_eq!(sum, 15);