1 /* 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) 6 */ 7 /*! 8 * \file value_ref_fwd.hpp 9 * \author Andrey Semashev 10 * \date 27.07.2012 11 * 12 * The header contains forward declaration of a value reference wrapper. 13 */ 14 15 #ifndef BOOST_LOG_UTILITY_VALUE_REF_FWD_HPP_INCLUDED_ 16 #define BOOST_LOG_UTILITY_VALUE_REF_FWD_HPP_INCLUDED_ 17 18 #include <boost/log/detail/config.hpp> 19 20 #ifdef BOOST_HAS_PRAGMA_ONCE 21 #pragma once 22 #endif 23 24 namespace boost { 25 26 BOOST_LOG_OPEN_NAMESPACE 27 28 /*! 29 * \brief Reference wrapper for a stored attribute value. 30 */ 31 template< typename T, typename TagT = void > 32 class value_ref; 33 34 BOOST_LOG_CLOSE_NAMESPACE // namespace log 35 36 } // namespace boost 37 38 #endif // BOOST_LOG_UTILITY_VALUE_REF_FWD_HPP_INCLUDED_ 39