iterableCompareNaturalOrder<E> function

int iterableCompareNaturalOrder<E>(Iterable<E> a, Iterable<E> b, { Comparator<E> comparator = compareNaturalOrder, })

Implementation

int iterableCompareNaturalOrder<E>(
  Iterable<E> a,
  Iterable<E> b, {
  Comparator<E> comparator = compareNaturalOrder,
}) {
  final itA = a.iterator;
  final itB = b.iterator;

  bool hasA = true;
  bool hasB = true;

  while (((hasA, hasB) = (itA.moveNext(), itB.moveNext())) == (true, true)) {
    final currentCompare = comparator(
      itA.current,
      itB.current,
    );

    if (currentCompare != 0) {
      return currentCompare;
    }
  }

  if (hasA) {
    return 1;
  }

  if (hasB) {
    return -1;
  }

  return 0;
}