containsAll method

bool containsAll(Iterable<Object?> other)

Returns true if all elements of other are contained in the receiver.

Implementation

bool containsAll(Iterable<Object?> other) {
  if (other.isEmpty) {
    return true;
  } else if (other.length == 1) {
    return contains(other.first);
  } else if (other is Multiset) {
    for (final element in other.distinct) {
      if (this[element] < other[element]) {
        return false;
      }
    }
    return true;
  } else {
    return containsAll(Multiset.of(other));
  }
}