text: // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
  // (C) Copyright 2005-2007 Jonathan Turkanis
  // 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.)
  
  // See http://www.boost.org/libs/iostreams for documentation.
  
  #ifndef BOOST_IOSTREAMS_DETAIL_DEFAULT_ARG_HPP_INCLUDED
  #define BOOST_IOSTREAMS_DETAIL_DEFAULT_ARG_HPP_INCLUDED
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1020)
  # pragma once
  #endif            
  
  #include <boost/config.hpp>
  #include <boost/detail/workaround.hpp>
  
  #if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
  # include <boost/mpl/identity.hpp>
  # define BOOST_IOSTREAMS_DEFAULT_ARG(arg) mpl::identity< arg >::type
  #else
  # define BOOST_IOSTREAMS_DEFAULT_ARG(arg) arg
  #endif
  
  #endif // #ifndef BOOST_IOSTREAMS_DETAIL_DEFAULT_ARG_HPP_INCLUDED
  