cgal/STL_Extension/include/CGAL/Default.h

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// 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/trunk/Kernel_23/include/CGAL/basic.h $
// $Id: basic.h 28567 2006-02-16 14:30:13Z lsaboret $
//
// 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