algorithm/transformation/remove_if.hpp

0001 /*=============================================================================
0002     Copyright (c) 2001-2011 Joel de Guzman
0003     Copyright (c) 2018 Kohei Takahashi
0004
0005     Distributed under the Boost Software License, Version 1.0. (See accompanying
0006     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0007 ==============================================================================*/
0008 #if !defined(FUSION_REMOVE_IF_07162005_0818)
0009 #define FUSION_REMOVE_IF_07162005_0818
0010
0011 #include <boost/fusion/support/config.hpp>
0012 #include <boost/fusion/view/filter_view/filter_view.hpp>
0013 #include <boost/mpl/not.hpp>
0014
0015 namespace boost { namespace fusion
0016 {
0017     namespace result_of
0018     {
0019         template <typename Sequence, typename Pred>
0020         struct remove_if
0021         {
0022             typedef filter_view<Sequence, mpl::not_<Pred> > type;
0023         };
0024     }
0025
0026     template <typename Pred, typename Sequence>
0027     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0028     inline typename result_of::remove_if<Sequence const, Pred>::type
0029     remove_if(Sequence const& seq)
0030     {
0031         typedef typename result_of::remove_if<Sequence const, Pred>::type result_type;
0032         return result_type(seq);
0033     }
0034 }}
0035
0036 #endif
0037