On May 14, 2012, at 08:40 , Kyle Sluder wrote: > On May 14, 2012, at 1:06 AM, Quincey Morris > <[email protected]> wrote: > >> 2. Check the KVO compliance of whichever of these keys you use. For example, >> a leaf key like this: >> >> - (BOOL) isLeaf { >> return self.properties.count > 0; >> } >> >> *isn't* KVO compliant. > > Hmm? As long as you return a set containing "properties" from > +keyPathsAffectingIsLeaf, and your class is KVO compliant for "properties", > this should also be KVO compliant.
That was my point, the "naked" isLeaf method isn't KVO compliant unless you supplement it with something like keyPathsAffectingIsLeaf. Note that the set should return "properties.count" (not "properties"), and the class should be KVO compliant for both "properties" AND "count". _______________________________________________ Cocoa-dev mailing list ([email protected]) 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 [email protected]
