Re: removeObserver:forKeyPath:context: fails; but removeObserver:forKeyPath: works?!
Re: removeObserver:forKeyPath:context: fails; but removeObserver:forKeyPath: works?!
- Subject: Re: removeObserver:forKeyPath:context: fails; but removeObserver:forKeyPath: works?!
- From: Sean McBride <email@hidden>
- Date: Wed, 11 Mar 2015 14:31:20 -0400
- Organization: Rogue Research Inc.
On Tue, 10 Mar 2015 18:25:23 +0000, Quincey Morris said:
>If something else is using a conflicting ‘removeObserver:forKeyPath:’,
>it might sorta work if all observers use it (because the total number of
>removals is equal to the number of observations, even if they remove
>each others’ observations), but fail if some try use
>‘removeObserver:forKeyPath:context:’ on an observation that’s already
>been removed.
It must be something like that. I've gutted my app down to test case size and it still reproduces. :( If you're curious I can put it online.
>Also, a long time ago (Leopard-ish), there was a horrible bug where
>observations of (from?) the same thing could get mixed up so that
>attempting to remove one would actually remove the other. I doubt this
>was ever fixed — it was subtle.
The Foundation Release Notes speak of similar things being fixed... but maybe there is another bug...
Cheers,
--
____________________________________________________________
Sean McBride, B. Eng email@hidden
Rogue Research www.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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