(Changed in version 2.8.0) collect has changed. The previous behavior can be reproduced with toSeq.
true if all iterators have a next element
true if all iterators have a next element
A list of the next elements of each iterator.
A list of the next elements of each iterator. Should only be called if
hasNext is true.
any iterator has no next element
A wrapper iterator that iterates over multiple iterators in parallel.