algorithm/query/none.hpp

0001 /*=============================================================================
0002     Copyright (c) 2001-2011 Joel de Guzman
0003     Copyright (c) 2007 Dan Marsden
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(BOOST_FUSION_NONE_07062005_1128)
0009 #define BOOST_FUSION_NONE_07062005_1128
0010
0011 #include <boost/fusion/support/config.hpp>
0012 #include <boost/fusion/algorithm/query/any.hpp>
0013
0014 namespace boost { namespace fusion
0015 {
0016     namespace result_of
0017     {
0018         template <typename Sequence, typename F>
0019         struct none
0020         {
0021             typedef bool type;
0022         };
0023     }
0024
0025     template <typename Sequence, typename F>
0026     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0027     inline bool
0028     none(Sequence const& seq, F f)
0029     {
0030         return !fusion::any(seq, f);
0031     }
0032 }}
0033
0034 #endif
0035