zip2<A, B> function
Creates an iterable of Product2<A, B>
by pairing up equally positioned
items from both iterables a
and b
. The returned iterable is truncated to
the length of the shorter of the two iterables.
Implementation
Iterable<(A, B)> zip2<A, B>(Iterable<A> a, Iterable<B> b) sync* {
final first = a.iterator;
final second = b.iterator;
while (first.moveNext() && second.moveNext()) {
yield (first.current, second.current);
}
}