1 /*============================================================================= 2 Copyright (c) 2001-2011 Joel de Guzman 3 4 Distributed under the Boost Software License, Version 1.0. (See accompanying 5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 6 ==============================================================================*/ 7 #if !defined(FUSION_AT_10022005_1616) 8 #define FUSION_AT_10022005_1616 9 10 #include <boost/fusion/support/config.hpp> 11 #include <boost/mpl/at.hpp> 12 #include <boost/fusion/sequence/intrinsic/value_at.hpp> 13 14 namespace boost { 15 namespace fusion 16 { 17 struct fusion_sequence_tag; 18 } 19 20 namespace mpl 21 { 22 template <typename Tag> 23 struct at_impl; 24 25 template <> 26 struct at_impl<fusion::fusion_sequence_tag> 27 { 28 template <typename Sequence, typename N> 29 struct apply : fusion::result_of::value_at<Sequence, N> {}; 30 }; 31 }} 32 33 #endif 34 35