williamr@4: 
williamr@4: #ifndef BOOST_MPL_AT_HPP_INCLUDED
williamr@4: #define BOOST_MPL_AT_HPP_INCLUDED
williamr@4: 
williamr@4: // Copyright Aleksey Gurtovoy 2000-2004
williamr@4: //
williamr@4: // Distributed under the Boost Software License, Version 1.0. 
williamr@4: // (See accompanying file LICENSE_1_0.txt or copy at 
williamr@4: // http://www.boost.org/LICENSE_1_0.txt)
williamr@4: //
williamr@4: // See http://www.boost.org/libs/mpl for documentation.
williamr@4: 
williamr@4: // $Source: /cvsroot/boost/boost/boost/mpl/at.hpp,v $
williamr@4: // $Date: 2004/09/04 01:33:46 $
williamr@4: // $Revision: 1.7 $
williamr@4: 
williamr@4: #include <boost/mpl/at_fwd.hpp>
williamr@4: #include <boost/mpl/aux_/at_impl.hpp>
williamr@4: #include <boost/mpl/long.hpp>
williamr@4: #include <boost/mpl/sequence_tag.hpp>
williamr@4: #include <boost/mpl/aux_/na_spec.hpp>
williamr@4: #include <boost/mpl/aux_/lambda_support.hpp>
williamr@4: #include <boost/mpl/aux_/nttp_decl.hpp>
williamr@4: 
williamr@4: namespace boost { namespace mpl {
williamr@4: 
williamr@4: template<
williamr@4:       typename BOOST_MPL_AUX_NA_PARAM(Sequence)
williamr@4:     , typename BOOST_MPL_AUX_NA_PARAM(N)
williamr@4:     >
williamr@4: struct at
williamr@4:     : at_impl< typename sequence_tag<Sequence>::type >
williamr@4:         ::template apply< Sequence,N >
williamr@4: {
williamr@4:     BOOST_MPL_AUX_LAMBDA_SUPPORT(2,at,(Sequence,N))
williamr@4: };
williamr@4: 
williamr@4: template<
williamr@4:       typename Sequence
williamr@4:     , BOOST_MPL_AUX_NTTP_DECL(long, N)
williamr@4:     >
williamr@4: struct at_c
williamr@4:     : at_impl< typename sequence_tag<Sequence>::type >
williamr@4:         ::template apply< Sequence,mpl::long_<N> >
williamr@4: {
williamr@4: };
williamr@4: 
williamr@4: BOOST_MPL_AUX_NA_SPEC(2, at)
williamr@4: 
williamr@4: }}
williamr@4: 
williamr@4: #endif // BOOST_MPL_AT_HPP_INCLUDED