| /*============================================================================= | |
| Copyright (c) 2001-2006 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/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> | |
| 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> | |
| 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 |