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package ilog.language.design.backend;

/**
 * @author      <a href="mailto:hak@ilog.fr">Hassan A&iuml;t-Kaci</a>
 * @copyright   &copy; 2000-20022<a href="http://www.ilog.fr/">ILOG, S.A.</a>
 */

import ilog.language.util.IntIterator;
import ilog.concert.advanced.*;

/**
 * This is an interface denoting a collection whose elements possess an index.
 */
public interface Indexable extends Lockable, Iteratable, IloIndexer
{
  public int size ();
  public int getIndex (Object o);
  public int getIndex (int i);
  public int getIndex (double x);
  public boolean equals (Object o, int[] permutation);
  public IloIntIterator indexIterator();
}