[Boost-commit] svn:boost r50168 - trunk/boost/fusion/support

Subject: [Boost-commit] svn:boost r50168 - trunk/boost/fusion/support
From: joel_at_[hidden]
Date: 2008-12-06 18:35:05

Author: djowel
Date: 2008-12-06 18:35:05 EST (Sat, 06 Dec 2008)
New Revision: 50168
URL: http://svn.boost.org/trac/boost/changeset/50168

Log:
added streaming for unused_type
Text files modified: 
   trunk/boost/fusion/support/unused.hpp |    17 +++++++++++++++--                       
   1 files changed, 15 insertions(+), 2 deletions(-)

Modified: trunk/boost/fusion/support/unused.hpp
==============================================================================
--- trunk/boost/fusion/support/unused.hpp	(original)
+++ trunk/boost/fusion/support/unused.hpp	2008-12-06 18:35:05 EST (Sat, 06 Dec 2008)
@@ -1,7 +1,7 @@
 /*=============================================================================
     Copyright (c) 2001-2006 Joel de Guzman
 
-    Distributed under the Boost Software License, Version 1.0. (See accompanying 
+    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_SUPPORT_UNUSED_20070305_1038)
@@ -13,7 +13,8 @@
 # pragma warning(disable: 4522) // multiple assignment operators specified warning
 #endif
 
-namespace boost { namespace fusion {
+namespace boost { namespace fusion
+{
     struct unused_type
     {
         unused_type()
@@ -53,6 +54,18 @@
     };
 
     unused_type const unused = unused_type();
+
+    template <typename Out>
+    inline Out& operator<<(Out& out, unused_type const&)
+    {
+        return out;
+    }
+
+    template <typename Out>
+    inline Out& operator>>(Out& out, unused_type&)
+    {
+        return out;
+    }
 }}
 
 #if defined(BOOST_MSVC)