boost/none.hpp

   1 // Copyright (C) 2003, Fernando Luis Cacciola Carballal.
   2 //
   3 // Distributed under the Boost Software License, Version 1.0.
   4 // (See accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6 //
   7 // See http://www.boost.org/libs/optional for documentation.
   8 //
   9 // You are welcome to contact the author at:
  10 //  fernando_cacciola@hotmail.com
  11 //
  12 #ifndef BOOST_NONE_17SEP2003_HPP
  13 #define BOOST_NONE_17SEP2003_HPP
  14
  15 #include "boost/none_t.hpp"
  16
  17 // NOTE: Borland users have to include this header outside any precompiled headers
  18 // (bcc<=5.64 cannot include instance data in a precompiled header)
  19 //  -- * To be verified, now that there's no unnamed namespace
  20
  21 namespace boost {
  22
  23 none_t const none = ((none_t)0) ;
  24
  25 } // namespace boost
  26
  27 #endif
  28