Chris@16: // Copyright Daniel Wallin, David Abrahams 2005. Use, modification and
Chris@16: // distribution is subject to the Boost Software License, Version 1.0. (See
Chris@16: // accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: #ifndef BOOST_PARAMETER_VOID_050329_HPP
Chris@16: #define BOOST_PARAMETER_VOID_050329_HPP
Chris@16: 
Chris@16: namespace boost { namespace parameter { 
Chris@16: 
Chris@16: // A placemarker for "no argument passed."
Chris@16: // MAINTAINER NOTE: Do not make this into a metafunction
Chris@16: struct void_ {}; 
Chris@16: 
Chris@16: namespace aux 
Chris@16: {
Chris@16: 
Chris@16:   inline void_& void_reference()
Chris@16:   {
Chris@16:       static void_ instance;
Chris@16:       return instance;
Chris@16:   }
Chris@16: 
Chris@16: } // namespace aux
Chris@16: 
Chris@16: }} // namespace boost::parameter
Chris@16: 
Chris@16: #endif // BOOST_PARAMETER_VOID_050329_HPP
Chris@16: