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Re: many-to-many relationships and retain cycles
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Re: many-to-many relationships and retain cycles


  • Subject: Re: many-to-many relationships and retain cycles
  • From: j o a r <email@hidden>
  • Date: Mon, 2 Jun 2008 09:32:59 -0700


On Jun 2, 2008, at 9:12 AM, Todd Ransom wrote:

It seems that what I need is a non-retaining array. I googled around a bit and was surprised that I could not find an existing implementation. It looks like I can create one by subclassing NSMutableArray, overriding the primitive methods, and using a CFArray as the backing store with NULL callbacks to avoid any kind of retain or release when objects are added or removed. Still, I thought I would ask around and see if anyone else has done this before I embark on trying to subclass a class cluster.

Has anyone out there created a non-retaining array class or come up with another solution to this problem? Or is there anything in particular I should watch out for when subclassing NSMutableArray?


If you're only targeting Leopard or later, you might want to take a look at "NSPointerArray".

j o a r


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