// Copyright (c) 2007,2009  INRIA Sophia-Antipolis (France).  All rights reserved.
//
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; version 2.1 of the License.
// See the file LICENSE.LGPL distributed with CGAL.
//
// Licensees holding a valid commercial license may use this file in
// accordance with the commercial license agreement provided with the software.
//
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
//
// $URL: svn+ssh://scm.gforge.inria.fr/svn/cgal/branches/CGAL-3.5-branch/STL_Extension/include/CGAL/Default.h $
// $Id: Default.h 50707 2009-07-20 08:52:20Z spion $
//
// Author(s)     : Sylvain Pion
 
#ifndef CGAL_DEFAULT_H
#define CGAL_DEFAULT_H

namespace CGAL {

// Default is a tag that can be used to shrink mangled names and
// error messages in place of the default value of template arguments.
// It could also be used by users to specify default values to arguments which
// are not at the end of the argument list.
// It can also be useful to easily break cyclic dependencies in templates.

struct Default
{
    template <typename Argument, typename Value>
    struct Get {
        typedef Argument type;
    };

    template <typename Value>
    struct Get <Default, Value> {
        typedef Value type;
    };
};

}

#endif // CGAL_DEFAULT_H
