pub fn put_back<I>(iterable: I) -> PutBack<I::IntoIter>ⓘNotable traits for PutBack<I>impl<I> Iterator for PutBack<I> where I: Iterator, type Item = I::Item; where I: IntoIterator,
impl<I> Iterator for PutBack<I> where I: Iterator, type Item = I::Item;
Create an iterator where you can put back a single item