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// Copyright (c) 2017
// 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/STL_Extension/include/CGAL/functional.h $
// $Id: include/CGAL/functional.h b26b07a1242 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Andreas Fabri
#ifndef CGAL_FUNCTIONAL_H
#define CGAL_FUNCTIONAL_H
namespace CGAL {
namespace cpp98 {
/// Replacement for `std::unary_function` that is deprecated since C++11,
/// and removed from C++17.
template < typename ArgumentType, typename ResultType>
struct unary_function {
typedef ArgumentType argument_type;
typedef ResultType result_type;
};
/// Replacement for `std::binary_function` that is deprecated since C++11,
/// and removed from C++17.
template < typename Arg1, typename Arg2, typename Result>
struct binary_function {
typedef Arg1 first_argument_type;
typedef Arg2 second_argument_type;
typedef Result result_type;
};
} // namespace cpp98
} // namespace CGAL
#endif // CGAL_FUNCTIONAL_H
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