2 * Copyright Andrey Semashev 2007 - 2015.
3 * Distributed under the Boost Software License, Version 1.0.
4 * (See accompanying file LICENSE_1_0.txt or copy at
5 * http://www.boost.org/LICENSE_1_0.txt)
8 * \file value_ref_fwd.hpp
9 * \author Andrey Semashev
12 * The header contains forward declaration of a value reference wrapper.
15 #ifndef BOOST_LOG_UTILITY_VALUE_REF_FWD_HPP_INCLUDED_
16 #define BOOST_LOG_UTILITY_VALUE_REF_FWD_HPP_INCLUDED_
18 #include <boost/log/detail/config.hpp>
20 #ifdef BOOST_HAS_PRAGMA_ONCE
26 BOOST_LOG_OPEN_NAMESPACE
29 * \brief Reference wrapper for a stored attribute value.
31 template< typename T, typename TagT = void >
34 BOOST_LOG_CLOSE_NAMESPACE // namespace log
38 #endif // BOOST_LOG_UTILITY_VALUE_REF_FWD_HPP_INCLUDED_