for_each.ipp

C++的一个好库。。。现在很流行

/*=============================================================================
    Copyright (c) 2003 Joel de Guzman
    Copyright (c) 2004 Peder Holt

    Use, modification and distribution is 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)
==============================================================================*/
#if !defined(FUSION_ALGORITHM_DETAIL_FOR_EACH_IPP)
#define FUSION_ALGORITHM_DETAIL_FOR_EACH_IPP

#include <boost/mpl/bool.hpp>
#include <boost/spirit/fusion/iterator/equal_to.hpp>
#include <boost/spirit/fusion/iterator/next.hpp>
#include <boost/spirit/fusion/iterator/deref.hpp>

namespace boost { namespace fusion { namespace detail
{
    template <typename First, typename Last, typename F>
    inline void
    for_each(First const&, Last const&, F const&, mpl::true_)
    {
    }

    template <typename First, typename Last, typename F>
    inline void
    for_each(First const& first, Last const& last, F const& f, mpl::false_)
    {
        f(*first);
        detail::for_each(fusion::next(first), last, f
            , meta::equal_to<BOOST_DEDUCED_TYPENAME meta::next<First>::type, Last>());
    }
}}}

#endif