#[legacy_modes]; fn iter_vec(v: ~[T], f: fn(T)) { for v.each |x| { f(x); } } fn main() { let v = ~[1, 2, 3, 4, 5]; let mut sum = 0; iter_vec(v, |i| { iter_vec(v, |j| { log(error, i * j); sum += i * j; }); }); log(error, sum); assert (sum == 225); }