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+/*=============================================================================
+ Copyright (c) 2014 Kohei Takahashi
+
+ 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)
+==============================================================================*/
+#ifndef FUSION_VALUE_AT_IMPL_16122014_1641
+#define FUSION_VALUE_AT_IMPL_16122014_1641
+
+#include <boost/config.hpp>
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/container/vector/detail/config.hpp>
+
+///////////////////////////////////////////////////////////////////////////////
+// Without variadics, we will use the PP version
+///////////////////////////////////////////////////////////////////////////////
+#if !defined(BOOST_FUSION_HAS_VARIADIC_VECTOR)
+# include <boost/fusion/container/vector/detail/cpp03/value_at_impl.hpp>
+#else
+
+///////////////////////////////////////////////////////////////////////////////
+// C++11 interface
+///////////////////////////////////////////////////////////////////////////////
+#include <boost/fusion/container/vector/vector_fwd.hpp>
+#include <boost/type_traits/declval.hpp>
+#include <boost/type_traits/remove_cv.hpp>
+
+namespace boost { namespace fusion
+{
+ struct vector_tag;
+
+ namespace vector_detail
+ {
+ template <typename I, typename ...T>
+ struct vector_data;
+ }
+
+ namespace extension
+ {
+ template <typename Tag>
+ struct value_at_impl;
+
+ template <>
+ struct value_at_impl<vector_tag>
+ {
+ template <typename Sequence, typename N>
+ struct apply
+ {
+ typedef typename boost::remove_cv<Sequence>::type seq;
+ typedef typename mpl::identity<decltype(seq::template value_at_impl<N::value>(boost::declval<seq*>()))>::type::type type;
+ };
+ };
+ }
+}}
+
+#endif
+#endif
+