小编use*_*377的帖子

有谁知道 Rust 是否提供某种包装迭代器？例如：

let data = vec!(1, 2, 3, 4, 5);
let mut it = data.into_iter();
let mut wrapped = some_wrapping_iter(it); // wrap it

wrapped.take(2).for_each(|e| process_first_2_elems(e));

it = wrapped.into(); // and get back the original
it.for_each(|e| process_remaining(e));