1// Copyright Daniel Wallin 2006.
2// Distributed under the Boost Software License, Version 1.0.
3// (See accompanying file LICENSE_1_0.txt or copy at
4// http://www.boost.org/LICENSE_1_0.txt)
5
6#ifndef BOOST_PARAMETER_USE_DEFAULT_TAG_HPP
7#define BOOST_PARAMETER_USE_DEFAULT_TAG_HPP
8
9#include <boost/config.hpp>
10
11namespace boost { namespace parameter { namespace aux {
12
13 struct use_default_tag
14 {
15 inline BOOST_CONSTEXPR BOOST_DEFAULTED_FUNCTION(use_default_tag(), {})
16
17 inline BOOST_CONSTEXPR BOOST_DEFAULTED_FUNCTION(
18 use_default_tag(use_default_tag const&), {}
19 )
20
21 inline BOOST_CONSTEXPR use_default_tag operator()() const
22 {
23 return *this;
24 }
25 };
26}}} // namespace boost::parameter::aux
27
28#endif // include guard
29
30

source code of boost/libs/parameter/include/boost/parameter/aux_/use_default_tag.hpp