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_ERASE_KEY_10022005_1851) 8 #define FUSION_ERASE_KEY_10022005_1851 9 10 #include <boost/fusion/support/config.hpp> 11 #include <boost/fusion/algorithm/query/find.hpp> 12 #include <boost/fusion/algorithm/transformation/erase.hpp> 13 #include <boost/mpl/not.hpp> 14 #include <boost/type_traits/is_same.hpp> 15 16 namespace boost { namespace fusion 17 { 18 namespace result_of 19 { 20 template <typename Sequence, typename Key> 21 struct erase_key 22 : erase<Sequence, typename find<Sequence, Key>::type> 23 {}; 24 } 25 26 template <typename Key, typename Sequence> 27 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED 28 inline typename result_of::erase_key<Sequence const, Key>::type erase_key(Sequence const & seq)29 erase_key(Sequence const& seq) 30 { 31 return erase(seq, find<Key>(seq)); 32 } 33 }} 34 35 #endif 36 37