ConstPolicy.h

00001 
00002 // The Loki Library
00003 // Copyright (c) 2006 Richard Sposato
00004 // Copyright (c) 2006 Peter Kümmel
00005 // Permission to use, copy, modify, distribute and sell this software for any 
00006 //     purpose is hereby granted without fee, provided that the above copyright 
00007 //     notice appear in all copies and that both that copyright notice and this 
00008 //     permission notice appear in supporting documentation.
00009 // The authors make no representations about the 
00010 //     suitability of this software for any purpose. It is provided "as is" 
00011 //     without express or implied warranty.
00013 #ifndef LOKI_CONST_POLICY_INC_
00014 #define LOKI_CONST_POLICY_INC_
00015 
00016 // $Id: ConstPolicy.h 769 2006-10-26 10:58:19Z syntheticpp $
00017 
00018 
00019 namespace Loki
00020 {
00021 
00026 
00027 
00034 
00035     template< class T >
00036     struct DontPropagateConst
00037     {
00038         typedef T Type;
00039     };
00040 
00047 
00048     template< class T >
00049     struct PropagateConst
00050     {
00051         typedef const T Type;
00052     };
00053 
00054 // default will not break existing code
00055 #ifndef LOKI_DEFAULT_CONSTNESS
00056 #define LOKI_DEFAULT_CONSTNESS ::Loki::DontPropagateConst
00057 #endif
00058 
00059 } // end namespace Loki
00060 
00061 #endif // end file guardian

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