count_impl.hpp

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

#ifndef BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED
#define BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED

// + file: boost/mpl/aux_/count_impl.hpp
// + last modified: 05/nov/03

// Copyright Aleksey Gurtovoy 2000-03
//
// Use, modification and distribution are subject to the Boost Software 
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy 
// at http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/mpl for documentation.

#include "boost/mpl/count_fwd.hpp"
#include "boost/mpl/count_if.hpp"
#include "boost/mpl/same_as.hpp"
#include "boost/mpl/aux_/config/static_constant.hpp"
#include "boost/mpl/aux_/config/workaround.hpp"
#include "boost/mpl/aux_/traits_lambda_spec.hpp"

namespace boost {
namespace mpl {

template< typename Tag > struct count_impl
{
    template< typename Sequence, typename T > struct apply
#if BOOST_WORKAROUND(__BORLANDC__,BOOST_TESTED_AT(0x561))
    {
        typedef typename count_if< Sequence,same_as<T> >::type type;
        BOOST_STATIC_CONSTANT(int, value = BOOST_MPL_AUX_VALUE_WKND(type)::value);
#else
        : count_if< Sequence,same_as<T> >
    {
#endif
    };
};

BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(2,count_impl)

}}

#endif // BOOST_MPL_AUX_COUNT_IMPL_HPP_INCLUDED