ceph/src/boost/boost/fusion/adapted/mpl/detail/value_at_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   3     Copyright (c) 2005-2006 Dan Marsden
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #if !defined(BOOST_FUSION_VALUE_AT_IMPL_31122005_1621)
   9 #define BOOST_FUSION_VALUE_AT_IMPL_31122005_1621
  10
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/mpl/at.hpp>
  13
  14 namespace boost { namespace fusion
  15 {
  16     struct mpl_sequence_tag;
  17
  18     namespace extension
  19     {
  20         template <typename Tag>
  21         struct value_at_impl;
  22
  23         template <>
  24         struct value_at_impl<mpl_sequence_tag>
  25         {
  26             template <typename Sequence, typename N>
  27             struct apply : mpl::at<Sequence, N> {};
  28         };
  29     }
  30 }}
  31
  32 #endif