Re: Trying to understand -- please help...

FROM : Uli Kusterer
DATE : Wed May 21 22:33:49 2008

Am 21.05.2008 um 18:34 schrieb Gérard Iglesias:
> In fact in its original case, there would be a crash, because 
> cityArray would point to a trashed pointer... I don't understand why 
> it is not crashing.



  Well, it's not a trashed pointer. The memory has been alloced (and 
self is set already), so all that would happen is that everything is 
probably initialized to zero. If NSObject doesn't do much 
initialization work in -init, you might get away with this bug without 
crashing. But you wouldn't want to rely on that...

  Oh, by the way, let me plug my memory management tutorials again, 
they're mainly for C, but the general procedure stays valid for 
Objective C:

What is Memory: http://www.masters-of-the-void.com/book5.htm

And here is one that talks a bit about what happens when you use un-
initialized memory:

Lists of Stuff: http://www.masters-of-the-void.com/book7.htm

Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://www.zathras.de