[Boost-commit] svn:boost r59607 - sandbox/statistics/detail/assign/boost/assign/detail

Subject: [Boost-commit] svn:boost r59607 - sandbox/statistics/detail/assign/boost/assign/detail
From: erwann.rogard_at_[hidden]
Date: 2010-02-09 18:48:58

Author: e_r
Date: 2010-02-09 18:48:57 EST (Tue, 09 Feb 2010)
New Revision: 59607
URL: http://svn.boost.org/trac/boost/changeset/59607

Log:
add assign_value
Added:
   sandbox/statistics/detail/assign/boost/assign/detail/
   sandbox/statistics/detail/assign/boost/assign/detail/assign_value.hpp   (contents, props changed)

Added: sandbox/statistics/detail/assign/boost/assign/detail/assign_value.hpp
==============================================================================
--- (empty file)
+++ sandbox/statistics/detail/assign/boost/assign/detail/assign_value.hpp	2010-02-09 18:48:57 EST (Tue, 09 Feb 2010)
@@ -0,0 +1,63 @@
+//////////////////////////////////////////////////////////////////////////////
+// assign::detail::assign_value.hpp                               			//
+//                                                                          //
+//  (C) Copyright 2010 M.P.G                                        		//
+//  Use, modification and distribution are subject to 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_ASSIGN_DETAIL_ASSIGN_VALUE_MPG_2010_HPP
+#define BOOST_ASSIGN_DETAIL_ASSIGN_VALUE_MPG_2010_HPP
+
+namespace boost{
+namespace assign_detail{
+
+	// This is a reference wrapper whose assignment operator copies the value of
+    // the rhs to the object pointed to.
+    //
+    // This is in contrast to assign_reference whose operator= rebinds the 
+    // address of the internal pointer. To that effect, call instead rebind() 
+	template< class T >
+    struct assign_value
+    {
+        assign_value()
+        { /* intentionally empty */ }
+
+        assign_value( T& r ) : ref_(&r)
+        { }
+
+        void operator=( const T& r )
+        {
+			*ref_ = r;
+        }
+
+        operator T&() const
+        {
+            return *ref_;
+        }
+
+        void swap( assign_value& r )
+        {
+            std::swap( *ref_, *r.ref_ );
+        }
+
+        T& get_ref() const
+        {
+            return *ref_;
+        }
+
+		void rebind( T & r )
+    	{
+       		ref_ = &r;
+    	}
+        
+    private:
+        T* ref_;
+
+    };
+    
+}// assign_detail
+}// boost
+
+#endif
+