NullType.h

00001 
00002 // The Loki Library
00003 // Copyright (c) 2001 by Andrei Alexandrescu
00004 // This code accompanies the book:
00005 // Alexandrescu, Andrei. "Modern C++ Design: Generic Programming and Design 
00006 //     Patterns Applied". Copyright (c) 2001. Addison-Wesley.
00007 // Permission to use, copy, modify, distribute and sell this software for any 
00008 //     purpose is hereby granted without fee, provided that the above copyright 
00009 //     notice appear in all copies and that both that copyright notice and this 
00010 //     permission notice appear in supporting documentation.
00011 // The author or Addison-Wesley Longman make no representations about the 
00012 //     suitability of this software for any purpose. It is provided "as is" 
00013 //     without express or implied warranty.
00015 #ifndef LOKI_NULLTYPE_INC_
00016 #define LOKI_NULLTYPE_INC_
00017 
00018 // $Id: NullType.h 751 2006-10-17 19:50:37Z syntheticpp $
00019 
00020 
00021 namespace Loki
00022 {
00024 // class NullType
00025 // Used as a placeholder for "no type here"
00026 // Useful as an end marker in typelists 
00028 
00029     class NullType {};
00030     
00031 }   // namespace Loki
00032 
00033 
00034 #endif // end file guardian

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