1
2#ifndef BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED
3#define BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED
4
5// Copyright Aleksey Gurtovoy 2000-2004
6//
7// Distributed under the Boost Software License, Version 1.0.
8// (See accompanying file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10//
11// See http://www.boost.org/libs/mpl for documentation.
12
13// $Id$
14// $Date$
15// $Revision$
16
17#include <boost/mpl/count_fwd.hpp>
18#include <boost/mpl/count_if.hpp>
19#include <boost/mpl/same_as.hpp>
20#include <boost/mpl/aux_/config/static_constant.hpp>
21#include <boost/mpl/aux_/config/workaround.hpp>
22#include <boost/mpl/aux_/traits_lambda_spec.hpp>
23
24namespace boost { namespace mpl {
25
26template< typename Tag > struct count_impl
27{
28 template< typename Sequence, typename T > struct apply
29#if BOOST_WORKAROUND(__BORLANDC__,BOOST_TESTED_AT(0x561))
30 {
31 typedef typename count_if< Sequence,same_as<T> >::type type;
32 BOOST_STATIC_CONSTANT(int, value = BOOST_MPL_AUX_VALUE_WKND(type)::value);
33#else
34 : count_if< Sequence,same_as<T> >
35 {
36#endif
37 };
38};
39
40BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,count_impl)
41
42}}
43
44#endif // BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED
45

source code of boost/boost/mpl/aux_/count_impl.hpp