| // 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 ndnboost { |
| |
| namespace detail { struct none_helper{}; } |
| |
| typedef int detail::none_helper::*none_t ; |
| |
| } // namespace ndnboost |
| |
| #endif |
| |