TIter it(NULL); it();

From: Alexander Zvyagin (zvyagin@mx.ihep.su)
Date: Tue Feb 24 1998 - 15:13:46 MET 

                                           IHEP, Protvino, Russia, 23-FEB-1998

    Dear all!

The string
TIter it(NULL); it();
produces:
*** Break *** Segmentation violation

May be it will be good to do some internal checks in TIterator?
I think it is better to have

void better(TList *l)
{
  TIter it(l);
  while( TObject *o=it() )
    .....
}
                                    
than

void worse(TList *l)
{
  if( NULL!=l )
  {
    TIter it(l);
    while( TObject *o=it() )
      .....
  }
}

better(NULL);
worse (NULL);

Alexander Zvyagin.

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