firstOfPairLess.h

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/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file firstOfPairLess.h
 * @author drose
 * @date 2001-06-27
 */

#ifndef FIRSTOFPAIRLESS_H
#define FIRSTOFPAIRLESS_H

#include "pandabase.h"

/**
 * An STL function object class, this is intended to be used on any ordered
 * collection of pairs of objects.  It uses < to compare the first elements of
 * the pair.
 */
template<class ObjectType>
class FirstOfPairLess {
public:
  INLINE bool operator () (const ObjectType &a, const ObjectType &b) const;
};

#include "firstOfPairLess.I"

#endif