/// for item in IntoIterator::into_iter(array).enumerate() {
/// let (i, x): (usize, i32) = item;
/// println!("array[{}] = {}", i, x);
/// for item in IntoIterator::into_iter(array).enumerate() {
/// let (i, x): (usize, i32) = item;
/// println!("array[{}] = {}", i, x);