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1/*=============================================================================
2 Copyright (c) 2001-2011 Joel de Guzman
3 Copyright (c) 2007 Dan Marsden
4
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
10
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>
16
17namespace boost { namespace fusion
18{
19 namespace result_of
20 {
21 template <typename Sequence, typename F>
22 struct count_if
23 {
24 typedef int type;
25 };
26 }
27
28 template <typename Sequence, typename F>
29 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
30 inline typename
31 enable_if<
32 traits::is_sequence<Sequence>
33 , int
34 >::type
35 count_if(Sequence const& seq, F f)
36 {
37 return detail::count_if(
38 seq, f, typename traits::category_of<Sequence>::type());
39 }
40}}
41
42#endif
43