[Boost-commit] svn:boost r48726 - sandbox/move/boost/move

Subject: [Boost-commit] svn:boost r48726 - sandbox/move/boost/move
From: daniel_james_at_[hidden]
Date: 2008-09-11 03:11:10

Author: danieljames
Date: 2008-09-11 03:11:09 EDT (Thu, 11 Sep 2008)
New Revision: 48726
URL: http://svn.boost.org/trac/boost/changeset/48726

Log:
Remove 'swap_from'.

I think I included 'swap_from' so that it could be used to write classes
that used swap for move and also included support for this library. But
in that case the user should just use 'move_from', so it isn't needed.
Text files modified: 
   sandbox/move/boost/move/move.hpp |    35 ++++++++---------------------------     
   1 files changed, 8 insertions(+), 27 deletions(-)

Modified: sandbox/move/boost/move/move.hpp
==============================================================================
--- sandbox/move/boost/move/move.hpp	(original)
+++ sandbox/move/boost/move/move.hpp	2008-09-11 03:11:09 EDT (Thu, 11 Sep 2008)
@@ -117,32 +117,6 @@
 
 /*************************************************************************************************/
 
-/*!
-\ingroup move_related
-\brief swap_from is used for move_ctors.
-*/
-
-template <typename T>
-struct swap_from
-{
-    swap_from(T& x)
-        : m(x)
-    {}
-
-    operator T() const
-    {
-        T x;
-        using std::swap;
-        swap(this->m, x);
-        return x;
-    }
-
-    T& m;
-};
-
-
-/*************************************************************************************************/
-
 #if !defined(BOOST_MOVE_NO_HAS_MOVE_ASSIGN)
 
 /*************************************************************************************************/
@@ -296,7 +270,14 @@
 \brief This version of move is selected when T is swappable.
 */
 template <typename T>
-T move(T& x, typename move_type_sink<swap_tag, T>::type = 0) { return T(swap_from<T>(x)); }
+T move(T& x, typename move_type_sink<swap_tag, T>::type = 0)
+{
+    T y;
+    using std::swap;
+    swap(x, y);
+    return y;
+}
+
 
 /*************************************************************************************************/