On Feb 16, 2012, at 8:22 AM, Matt Neuburg <m...@tidbits.com> wrote: > On Wed, 15 Feb 2012 16:20:50 -0800, Greg Parker <gpar...@apple.com> said: >> >> Are you using GC or ARC? I think this is safe with GC but not safe with ARC, >> but I'm not an expert in the NSNotificationCenter machinery. > > ARC, but I don't see how it might be unsafe. I sure *hope* it isn't, because > that's what the __weak is for. You need that because if your observer doesn't > vanish in good order, neither will +self+, because the observer retains > +self+, not just while registered with the notification center but for as > long as it lives (by way of the block, I presume). *That* is something I *do* > understand, having spent many hours watching the retain counts at work.
The question is, who retains the observer? The __block __weak variable does not, because it's weak. NSNotificationCenter does not, as I understand it. -- Greg Parker gpar...@apple.com Runtime Wrangler _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
