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////////////////////////////////////////////////////////////////////////////////
// The Loki Library
// Copyright (c) 2001 by Andrei Alexandrescu
// This code accompanies the book:
// Alexandrescu, Andrei. "Modern C++ Design: Generic Programming and Design
// Patterns Applied". Copyright (c) 2001. Addison-Wesley.
// Permission to use, copy, modify, distribute and sell this software for any
// purpose is hereby granted without fee, provided that the above copyright
// notice appear in all copies and that both that copyright notice and this
// permission notice appear in supporting documentation.
// The author or Addison-Wesley Longman make no representations about the
// suitability of this software for any purpose. It is provided "as is"
// without express or implied warranty.
////////////////////////////////////////////////////////////////////////////////
#ifndef LOKI_EMPTYTYPE_INC_
#define LOKI_EMPTYTYPE_INC_
// $Id: EmptyType.h 751 2006-10-17 19:50:37Z syntheticpp $
namespace Loki
{
////////////////////////////////////////////////////////////////////////////////
// class EmptyType
// Used as a class type that doesn't hold anything
// Useful as a strawman class
////////////////////////////////////////////////////////////////////////////////
class EmptyType {};
inline bool operator==(const EmptyType&, const EmptyType&)
{
return true;
}
inline bool operator<(const EmptyType&, const EmptyType&)
{
return false;
}
inline bool operator>(const EmptyType&, const EmptyType&)
{
return false;
}
}
#endif // end file guardian
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