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boost_optional/include/boost/detail/none_t.hpp

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2003-10-28 00:09:18 +00:00
// (C) 2002, Fernando Luis Cacciola Carballal.
//
// This material is provided "as is", with absolutely no warranty expressed
// or implied. Any use is at your own risk.
//
// Permission to use or copy this software for any purpose is hereby granted
// without fee, provided the above notices are retained on all copies.
// Permission to modify the code and to distribute modified code is granted,
// provided the above notices are retained, and a notice that the code was
// modified is included with the above copyright notice.
//
// You are welcome to contact the author at:
// fernando_cacciola@hotmail.com
//
#ifndef BOOST_DETAIL_NONE_T_17SEP2003_HPP
#define BOOST_DETAIL_NONE_T_17SEP2003_HPP
namespace boost {
namespace detail {
struct none_helper{};
typedef int none_helper::*none_t ;
} // namespace detail
} // namespace boost
#endif