containsAll method

bool containsAll(
  1. Iterable<C> values
)

Returns {@code true} if every element in {@code values} is {@linkplain #contains contained} in this range.

Implementation

bool containsAll(Iterable<C> values) {
  if (values.isEmpty) {
    return true;
  }

  for (C value in values) {
    if (!contains(value)) {
      return false;
    }
  }
  return true;
}