41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
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// Copyright (c) 2004
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// Utrecht University (The Netherlands),
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// ETH Zurich (Switzerland),
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// INRIA Sophia-Antipolis (France),
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// Max-Planck-Institute Saarbruecken (Germany),
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// and Tel-Aviv University (Israel). All rights reserved.
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//
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// This file is part of CGAL (www.cgal.org)
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//
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// $URL: https://github.com/CGAL/cgal/blob/v5.1/Kernel_23/include/CGAL/Kernel/mpl.h $
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// $Id: mpl.h 0779373 2020-03-26T13:31:46+01:00 Sébastien Loriot
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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//
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// Author(s) : Sylvain Pion
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#ifndef CGAL_KERNEL_MPL_H
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#define CGAL_KERNEL_MPL_H
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#include <CGAL/config.h>
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// Some tools for basic template metaprogramming.
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// These bits should move to CGAL/mpl.h in STL_Extension, or taken from Boost.
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namespace CGAL {
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// The additionnal int parameter is to obtain different types.
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template < typename A, typename B, int = 0 >
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struct First_if_different {
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typedef A Type;
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};
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template < typename A, int i >
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struct First_if_different<A, A, i> {
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struct Type{};
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};
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} //namespace CGAL
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#endif
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