| /*============================================================================= |
| Copyright (c) 2001-2006 Joel de Guzman |
| |
| 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(FUSION_BACK_09162005_0350) |
| #define FUSION_BACK_09162005_0350 |
| |
| #include <boost/fusion/sequence/intrinsic/end.hpp> |
| #include <boost/fusion/iterator/prior.hpp> |
| #include <boost/fusion/iterator/deref.hpp> |
| #include <boost/mpl/bool.hpp> |
| |
| namespace boost { namespace fusion |
| { |
| struct fusion_sequence_tag; |
| |
| namespace result_of |
| { |
| template <typename Sequence> |
| struct back |
| : result_of::deref<typename result_of::prior<typename result_of::end<Sequence>::type>::type> |
| {}; |
| } |
| |
| template <typename Sequence> |
| inline typename result_of::back<Sequence>::type |
| back(Sequence& seq) |
| { |
| return *fusion::prior(fusion::end(seq)); |
| } |
| |
| template <typename Sequence> |
| inline typename result_of::back<Sequence const>::type |
| back(Sequence const& seq) |
| { |
| return *fusion::prior(fusion::end(seq)); |
| } |
| }} |
| |
| #endif |