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// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
// Copyright (C) 2007, Anthony Williams
// Copyright (C) 2007, Steven Watanabe, Richard Smith
//
// Distributed under 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:
// fernando.cacciola@gmail.com
//
#ifndef BOOST_NONE_17SEP2003_HPP
#define BOOST_NONE_17SEP2003_HPP
namespace boost
{
namespace detail
{
class none_helper;
}
inline void none(detail::none_helper);
namespace detail
{
class none_helper
{
private:
none_helper( none_helper const& ) {}
friend void boost::none(none_helper);
};
}
typedef void (*none_t)(detail::none_helper);
inline void none(detail::none_helper) {}
}
#endif
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