380     }
 381 
 382     // Stateful intermediate operations from Stream
 383 
 384     @Override
 385     public final Stream<P_OUT> distinct() {
 386         return DistinctOps.makeRef(this);
 387     }
 388 
 389     @Override
 390     public final Stream<P_OUT> sorted() {
 391         return SortedOps.makeRef(this);
 392     }
 393 
 394     @Override
 395     public final Stream<P_OUT> sorted(Comparator<? super P_OUT> comparator) {
 396         return SortedOps.makeRef(this, comparator);
 397     }
 398 
 399     @Override
 400     public final Stream<P_OUT> limit(long maxSize) {
 401         if (maxSize < 0)
 402             throw new IllegalArgumentException(Long.toString(maxSize));
 403         return SliceOps.makeRef(this, 0, maxSize);
 404     }
 405 
 406     @Override
 407     public final Stream<P_OUT> skip(long n) {
 408         if (n < 0)
 409             throw new IllegalArgumentException(Long.toString(n));
 410         if (n == 0)
 411             return this;
 412         else
 413             return SliceOps.makeRef(this, n, -1);
 414     }
 415 
 416     @Override
 417     public final Stream<P_OUT> takeWhile(Predicate<? super P_OUT> predicate) {
 418         return WhileOps.makeTakeWhileRef(this, predicate);
 419     }
 420 

 380     }
 381 
 382     // Stateful intermediate operations from Stream
 383 
 384     @Override
 385     public final Stream<P_OUT> distinct() {
 386         return DistinctOps.makeRef(this);
 387     }
 388 
 389     @Override
 390     public final Stream<P_OUT> sorted() {
 391         return SortedOps.makeRef(this);
 392     }
 393 
 394     @Override
 395     public final Stream<P_OUT> sorted(Comparator<? super P_OUT> comparator) {
 396         return SortedOps.makeRef(this, comparator);
 397     }
 398 
 399     @Override
 400     public Stream<P_OUT> limit(long maxSize) {
 401         if (maxSize < 0)
 402             throw new IllegalArgumentException(Long.toString(maxSize));
 403         return SliceOps.makeRef(this, 0, maxSize);
 404     }
 405 
 406     @Override
 407     public final Stream<P_OUT> skip(long n) {
 408         if (n < 0)
 409             throw new IllegalArgumentException(Long.toString(n));
 410         if (n == 0)
 411             return this;
 412         else
 413             return SliceOps.makeRef(this, n, -1);
 414     }
 415 
 416     @Override
 417     public final Stream<P_OUT> takeWhile(Predicate<? super P_OUT> predicate) {
 418         return WhileOps.makeTakeWhileRef(this, predicate);
 419     }
 420