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    Copyright (c) 2001-2011 Joel de Guzman

    Distributed under the Boost Software License, Version 1.0. (See accompanying 
    file LICENSE_1_0.txt or copy at
#if !defined(FUSION_BACK_10022005_1620)
#define FUSION_BACK_10022005_1620

#include <boost/mpl/back.hpp>
#include <boost/fusion/sequence/intrinsic/end.hpp>
#include <boost/fusion/iterator/prior.hpp>
#include <boost/fusion/iterator/value_of.hpp>

namespace boost { namespace mpl
    template <typename Tag>
    struct back_impl;

    template <>
    struct back_impl<fusion::fusion_sequence_tag>
        template <typename Sequence>
        struct apply : 
                typename fusion::result_of::prior<
                    typename fusion::result_of::end<Sequence>::type
                >::type> {};