Chris@16: 
Chris@16: #ifndef BOOST_MPL_ALWAYS_HPP_INCLUDED
Chris@16: #define BOOST_MPL_ALWAYS_HPP_INCLUDED
Chris@16: 
Chris@16: // Copyright Aleksey Gurtovoy 2001-2004
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: // See http://www.boost.org/libs/mpl for documentation.
Chris@16: 
Chris@16: // $Id: always.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
Chris@16: // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
Chris@16: // $Revision: 49267 $
Chris@16: 
Chris@16: #include <boost/mpl/aux_/preprocessor/def_params_tail.hpp>
Chris@16: #include <boost/mpl/aux_/na.hpp>
Chris@16: #include <boost/mpl/aux_/arity_spec.hpp>
Chris@16: 
Chris@16: namespace boost { namespace mpl {
Chris@16: 
Chris@16: template< typename Value > struct always
Chris@16: {
Chris@16:     template<
Chris@16:           typename T
Chris@16:         BOOST_MPL_PP_NESTED_DEF_PARAMS_TAIL(1, typename T, na)
Chris@16:         >
Chris@16:     struct apply
Chris@16:     {
Chris@16:         typedef Value type;
Chris@16:     };
Chris@16: };
Chris@16: 
Chris@16: BOOST_MPL_AUX_ARITY_SPEC(1, always)
Chris@16: 
Chris@16: }}
Chris@16: 
Chris@16: #endif // BOOST_MPL_ALWAYS_HPP_INCLUDED