1 files changed, 43 insertions, 0 deletions
diff --git a/boost/fusion/container/generation/pair_tie.hpp b/boost/fusion/container/generation/pair_tie.hpp
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+++ b/boost/fusion/container/generation/pair_tie.hpp
@@ -0,0 +1,43 @@
+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+    Copyright (c) 2006 Dan Marsden
+
+    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)
+==============================================================================*/
+#if !defined (BOOST_FUSION_PAIR_TIE_20060812_2058)
+#define BOOST_FUSION_PAIR_TIE_20060812_2058
+
+#include <boost/type_traits/is_const.hpp>
+#include <boost/utility/enable_if.hpp>
+
+namespace boost { namespace fusion {
+
+    template<typename Key, typename T>
+    struct pair;
+
+    namespace result_of
+    {
+        template<typename Key, typename T>
+        struct pair_tie
+        {
+            typedef fusion::pair<Key, T&> type;
+        };
+    }
+
+    template<typename Key, typename T>
+    typename disable_if<is_const<T>, typename result_of::pair_tie<Key, T>::type>::type
+    pair_tie(T& t)
+    {
+        return typename result_of::pair_tie<Key, T>::type(t);
+    }
+
+    template<typename Key, typename T>
+    typename result_of::pair_tie<Key, T const>::type
+    pair_tie(T const& t)
+    {
+        return typename result_of::pair_tie<Key, T const>::type(t);
+    }
+}}
+
+#endif