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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 http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#if !defined(FUSION_BACK_09162005_0350)
#define FUSION_BACK_09162005_0350
#include <boost/fusion/sequence/intrinsic_fwd.hpp>
#include <boost/fusion/sequence/intrinsic/end.hpp>
#include <boost/fusion/iterator/prior.hpp>
#include <boost/fusion/iterator/deref.hpp>
#include <boost/mpl/bool.hpp>
namespace boost { namespace fusion
{
struct fusion_sequence_tag;
namespace result_of
{
template <typename Sequence>
struct back
: result_of::deref<typename result_of::prior<typename result_of::end<Sequence>::type>::type>
{};
}
template <typename Sequence>
inline typename result_of::back<Sequence>::type
back(Sequence& seq)
{
return *fusion::prior(fusion::end(seq));
}
template <typename Sequence>
inline typename result_of::back<Sequence const>::type
back(Sequence const& seq)
{
return *fusion::prior(fusion::end(seq));
}
}}
#endif
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