| // Copyright (C) 2003, Fernando Luis Cacciola Carballal. | |
| // | |
| // Use, modification, and distribution is subject to 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/optional for documentation. | |
| // | |
| // You are welcome to contact the author at: | |
| // fernando_cacciola@hotmail.com | |
| // | |
| #ifndef BOOST_NONE_T_17SEP2003_HPP | |
| #define BOOST_NONE_T_17SEP2003_HPP | |
| namespace boost { | |
| namespace detail { struct none_helper{}; } | |
| typedef int detail::none_helper::*none_t ; | |
| } // namespace boost | |
| #endif | |