algorithm/transformation/erase_key.hpp

0001 /*=============================================================================
0002     Copyright (c) 2001-2011 Joel de Guzman
0003
0004     Distributed under the Boost Software License, Version 1.0. (See accompanying
0005     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 ==============================================================================*/
0007 #if !defined(FUSION_ERASE_KEY_10022005_1851)
0008 #define FUSION_ERASE_KEY_10022005_1851
0009
0010 #include <boost/fusion/support/config.hpp>
0011 #include <boost/fusion/algorithm/query/find.hpp>
0012 #include <boost/fusion/algorithm/transformation/erase.hpp>
0013 #include <boost/mpl/not.hpp>
0014 #include <boost/type_traits/is_same.hpp>
0015
0016 namespace boost { namespace fusion
0017 {
0018     namespace result_of
0019     {
0020         template <typename Sequence, typename Key>
0021         struct erase_key
0022           : erase<Sequence, typename find<Sequence, Key>::type>
0023         {};
0024     }
0025
0026     template <typename Key, typename Sequence>
0027     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0028     inline typename result_of::erase_key<Sequence const, Key>::type
0029     erase_key(Sequence const& seq)
0030     {
0031         return erase(seq, find<Key>(seq));
0032     }
0033 }}
0034
0035 #endif
0036