Method size

output/java_guava/1.4.18/Sets.java:637–640

()

    final Set<? extends E> set2minus1 = difference(set2, set1);
    return new SetView<E>() {
      @Override
      public int size() {
        return IntMath.saturatedAdd(set1.size(), set2minus1.size());
      }

      @Override
      public boolean isEmpty() {