00001 // Copyright (C) 2003, Fernando Luis Cacciola Carballal. 00002 // 00003 // Use, modification, and distribution is subject to the Boost Software 00004 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 00005 // http://www.boost.org/LICENSE_1_0.txt) 00006 // 00007 // See http://www.boost.org/lib/optional for documentation. 00008 // 00009 // You are welcome to contact the author at: 00010 // fernando_cacciola@hotmail.com 00011 // 00012 #ifndef BOOST_DETAIL_NONE_T_17SEP2003_HPP 00013 #define BOOST_DETAIL_NONE_T_17SEP2003_HPP 00014 00015 namespace boost { 00016 00017 namespace detail { 00018 00019 struct none_helper{}; 00020 00021 typedef int none_helper::*none_t ; 00022 00023 } // namespace detail 00024 00025 } // namespace boost 00026 00027 #endif 00028