Method computeNext

output/java_guava/1.4.18/Iterators.java:647–656

()

    checkNotNull(retainIfTrue);
    return new AbstractIterator<T>() {
      @Override
      protected T computeNext() {
        while (unfiltered.hasNext()) {
          T element = unfiltered.next();
          if (retainIfTrue.apply(element)) {
            return element;
          }
        }
        return endOfData();
      }
    };
  }