Method computeNext

output/java_guava/1.4.19/Sets.java:797–813

()

        final Iterator<? extends E> itr2 = set2.iterator();
        return new AbstractIterator<E>() {
          @Override
          public E computeNext() {
            while (itr1.hasNext()) {
              E elem1 = itr1.next();
              if (!set2.contains(elem1)) {
                return elem1;
              }
            }

            while (itr2.hasNext()) {
              E elem2 = itr2.next();
              if (!set1.contains(elem2)) {
                return elem2;
              }
            }
            return endOfData();
          }
        };
      }