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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_FRONT_09162005_0343)
#define FUSION_FRONT_09162005_0343
#include <boost/fusion/support/config.hpp>
#include <boost/fusion/sequence/intrinsic_fwd.hpp>
#include <boost/fusion/sequence/intrinsic/begin.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 front
: result_of::deref<typename result_of::begin<Sequence>::type>
{};
}
template <typename Sequence>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
inline typename result_of::front<Sequence>::type
front(Sequence& seq)
{
return *fusion::begin(seq);
}
template <typename Sequence>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
inline typename result_of::front<Sequence const>::type
front(Sequence const& seq)
{
return *fusion::begin(seq);
}
}}
#endif
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