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Roaring bitmaps are compressed bitmaps (also called bitsets) which tend to outperform conventional compressed bitmaps such as WAH or Concise.

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/*
 * (c) the authors Licensed under the Apache License, Version 2.0.
 */
package org.roaringbitmap.longlong;

/**
 * A simple iterator over long values. Using an IntIterator instead of Java's Iterator<Long>
 * avoids the overhead of the Long class: on some tests, LongIterator is nearly twice as fast as
 * Iterator<Long>.
 */
public interface LongIterator extends Cloneable {
  /**
   * Creates a copy of the iterator.
   * 
   * @return a clone of the current iterator
   */
  LongIterator clone();

  /**
   * @return whether there is another value
   */
  boolean hasNext();

  /**
   * @return next long value
   */
  long next();

}