TIterator.cxx

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// @(#)root/cont:$Id$
// Author: Fons Rademakers   13/08/95
 
/*************************************************************************
 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
/** \class TIterator
\ingroup Containers
Iterator abstract base class. This base class provides the interface
for collection iterators.
\note See TList documentation for examples of derived classes and on how
to loop with these iterators, and TCollection documentation for more
modern alternatives that dynamically cast the derived class.
*/
 
#include "TIterator.h"
#include "TError.h"
 
 
////////////////////////////////////////////////////////////////////////////////
/// Compare two iterator objects.
/// For backward compatibility reasons we have to provide this
/// default implementation.
 
Bool_t TIterator::operator!=(const TIterator &) const
{
   ::Warning("TIterator::operator!=", "this method must be overridden!");
   return false;
}
 
////////////////////////////////////////////////////////////////////////////////
/// Return current object or nullptr.
/// For backward compatibility reasons we have to provide this
/// default implementation.
 
TObject *TIterator::operator*() const
{
   ::Warning("TIterator::operator*", "this method must be overridden!");
   return nullptr;
}