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 = (static_cast<none_t>(0)) ; 24 25 } // namespace boost 26 27 #endif 28 29