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// Copyright (c) 2004
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1.1/Kernel_23/include/CGAL/Kernel/mpl.h $
// $Id: include/CGAL/Kernel/mpl.h 08b27d3db14 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Sylvain Pion
#ifndef CGAL_KERNEL_MPL_H
#define CGAL_KERNEL_MPL_H
#include <CGAL/config.h>
// Some tools for basic template metaprogramming.
// These bits should move to CGAL/mpl.h in STL_Extension, or taken from Boost.
namespace CGAL {
// The additional int parameter is to obtain different types.
template < typename A, typename B, int = 0 >
struct First_if_different {
typedef A Type;
};
template < typename A, int i >
struct First_if_different<A, A, i> {
struct Type{};
};
} //namespace CGAL
#endif
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