mirror of https://github.com/CGAL/cgal
35 lines
695 B
C++
35 lines
695 B
C++
// Copyright (c) 2016 GeometryFactory (France). 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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// $URL$
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// $Id$
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// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
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//
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// Author(s) : Jane Tournois
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#ifndef CGAL_HAS_MEMBER_ID_H
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#define CGAL_HAS_MEMBER_ID_H
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namespace CGAL {
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namespace internal {
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template <typename Type>
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class Has_member_id
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{
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template <typename U>
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static auto check(int) -> decltype(std::declval<U>().id(), char());
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template <typename U>
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static int check(...);
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public:
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static const bool value = (sizeof(char) == sizeof(check<Type>(0)));
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};
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} // internal
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} // cgal
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#endif /* CGAL_HAS_MEMBER_ID_H */
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