1 // Copyright (C) 2003, Fernando Luis Cacciola Carballal.
3 // Use, modification, and distribution is subject to the Boost Software
4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
7 // See http://www.boost.org/libs/optional for documentation.
9 // You are welcome to contact the author at:
10 // fernando_cacciola@hotmail.com
12 #ifndef BOOST_NONE_T_17SEP2003_HPP
13 #define BOOST_NONE_T_17SEP2003_HPP
17 namespace detail { struct none_helper{}; }
19 typedef int detail::none_helper::*none_t ;