content: package net.agkn.hll.util;
  
  /*
   * Copyright 2013 Aggregate Knowledge, Inc.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  /**
   * A <code>long</code>-based iterator.  This is not <i>is-a</i> {@link java.util.Iterator}
   * to prevent autoboxing between <code>Long</code> and <code>long</code>.
   *
   * @author rgrzywinski
   */
  public interface LongIterator {
      /**
       * @return <code>true</code> if and only if there are more elements to
       *         iterate over.  <code>false</code> otherwise.
       */
      boolean hasNext();
  
      /**
       * @return the next <code>long</code> in the collection.
       */
      long next();
  }