1 /*=============================================================================
2 Copyright (c) 2001-2011 Joel de Guzman
3 Copyright (c) 2007 Dan Marsden
5 Distributed under the Boost Software License, Version 1.0. (See accompanying
6 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7 ==============================================================================*/
8 #if !defined(BOOST_FUSION_COUNT_IF_09162005_0137)
9 #define BOOST_FUSION_COUNT_IF_09162005_0137
11 #include <boost/fusion/support/config.hpp>
12 #include <boost/fusion/algorithm/query/detail/count_if.hpp>
13 #include <boost/fusion/support/category_of.hpp>
14 #include <boost/fusion/support/is_sequence.hpp>
15 #include <boost/utility/enable_if.hpp>
17 namespace boost { namespace fusion
21 template <typename Sequence, typename F>
28 template <typename Sequence, typename F>
29 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
32 traits::is_sequence<Sequence>
35 count_if(Sequence const& seq, F f)
37 return detail::count_if(
38 seq, f, typename traits::category_of<Sequence>::type());