none_t.hpp

来自「support vector clustering for vc++」· HPP 代码 · 共 29 行

// 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/lib/optional for documentation.
//
// You are welcome to contact the author at:
//  [e-mail]
//
#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