/*============================================================================= Copyright (c) 2001-2011 Joel de Guzman Copyright (c) 2006 Dan Marsden Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) ==============================================================================*/ #if !defined (BOOST_FUSION_PAIR_TIE_20060812_2058) #define BOOST_FUSION_PAIR_TIE_20060812_2058 #include <boost/fusion/support/config.hpp> #include <boost/type_traits/is_const.hpp> #include <boost/utility/enable_if.hpp> namespace boost { namespace fusion { template<typename Key, typename T> struct pair; namespace result_of { template<typename Key, typename T> struct pair_tie { typedef fusion::pair<Key, T&> type; }; } template<typename Key, typename T> BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED typename disable_if<is_const<T>, typename result_of::pair_tie<Key, T>::type>::type pair_tie(T& t) { return typename result_of::pair_tie<Key, T>::type(t); } template<typename Key, typename T> BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED typename result_of::pair_tie<Key, T const>::type pair_tie(T const& t) { return typename result_of::pair_tie<Key, T const>::type(t); } }} #endif