On Sep 6, 2011, at 9:09 AM, Joar Wingfors wrote: > There's an additional consideration to keep in mind - @synthesized getters > use the retain+autorelease pattern which makes local variables acquired from > such getters "safer" in certain (unusual) usage patterns.
And considerably more expensive in all cases, since calling a getter now involves messing with retain counts and autorelease pools. It also means the getter method has to contain a whole register-saving preamble and postamble instead of just the couple of instructions to pull out the ivar value. At the time ObjC-2 was in development there was a debate within Apple about whether to make ‘nonatomic’ be the default, with an ‘atomic’ keyword to enable the safety features. I really wish it had gone that way. —Jens_______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
