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/*=============================================================================
Copyright (c) 2001-2013 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(BOOST_FUSION_MAP_DETAIL_VALUE_AT_IMPL_02042013_0821)
#define BOOST_FUSION_MAP_DETAIL_VALUE_AT_IMPL_02042013_0821
#include <boost/fusion/support/config.hpp>
#include <boost/mpl/at.hpp>
namespace boost { namespace fusion
{
struct map_tag;
namespace extension
{
template <typename Tag>
struct value_at_impl;
template <>
struct value_at_impl<map_tag>
{
template <typename Sequence, typename N>
struct apply
{
typedef mpl::int_<N::value> index;
typedef
decltype(std::declval<Sequence>().get_val(index()))
type;
};
};
}
}}
#endif
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