aca2f0ccab
git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@17 7ec92016-0320-0410-acc4-a06ded1c099a
39 lines
1.6 KiB
C++
39 lines
1.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// The Loki Library
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// Copyright (c) 2001 by Andrei Alexandrescu
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// This code accompanies the book:
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// Alexandrescu, Andrei. "Modern C++ Design: Generic Programming and Design
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// Patterns Applied". Copyright (c) 2001. Addison-Wesley.
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// Permission to use, copy, modify, distribute and sell this software for any
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// purpose is hereby granted without fee, provided that the above copyright
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// notice appear in all copies and that both that copyright notice and this
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// permission notice appear in supporting documentation.
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// The author or Addison-Wesley Longman make no representations about the
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// suitability of this software for any purpose. It is provided "as is"
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// without express or implied warranty.
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////////////////////////////////////////////////////////////////////////////////
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// Last update: November 22, 2001
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#ifndef NULLTYPE_INC_
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#define NULLTYPE_INC_
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namespace Loki
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{
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////////////////////////////////////////////////////////////////////////////////
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// class NullType
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// Used as a placeholder for "no type here"
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// Useful as an end marker in typelists
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////////////////////////////////////////////////////////////////////////////////
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class NullType {};
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} // namespace Loki
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////////////////////////////////////////////////////////////////////////////////
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// Change log:
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// June 20, 2001: ported by Nick Thurn to gcc 2.95.3. Kudos, Nick!!!
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// November 22, 2001: minor change to support porting to boost
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////////////////////////////////////////////////////////////////////////////////
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#endif // NULLTYPE_INC_
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