On May 20, 2010, at 7:40 AM, Thomas Davie <tom.da...@gmail.com> wrote:

Can I ask why you shouldn't use them in init? It makes a lot of sense to not use them in alloc/dealloc, but I'm not using them in init... after all, what if I replace the ivar with a derived property from another object? Why should I have to recode my init?

I'll give you a concrete example. We have an NSController-like class that lives in a framework. Its designated intializer is - initWithContent:. In one of our apps, we have a subclass of this whose initializer is -initWithDocument:, and which uses the document to figure out its content. It also overrides -setContent: to register for notifications and the like. -setContent: relies on certain state that is set up in -initWithDocument:, but this setup can't be done until - initWithDocument: calls -[super initWithContent:]. But that method uses the -setContent: setter to set its content property. Boom!

--Kyle Sluder
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