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File: exchange.hpp
// Copyright Oliver Kowalke 2014. // 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) #ifndef BOOST_CONTEXT_DETAIL_EXCHANGE_H #define BOOST_CONTEXT_DETAIL_EXCHANGE_H #include <algorithm> #include <utility> #include <boost/config.hpp> #ifdef BOOST_HAS_ABI_HEADERS # include BOOST_ABI_PREFIX #endif namespace boost { namespace context { namespace detail { template< typename T, typename U = T > T exchange( T & t, U && nv) { T ov = std::move( t); t = std::forward< U >( nv); return ov; } }}} #ifdef BOOST_HAS_ABI_HEADERS #include BOOST_ABI_SUFFIX #endif #endif // BOOST_CONTEXT_DETAIL_EXCHANGE_H