On Jun 22, 2009, at 3:39 PM, Daniel Torrey wrote:
I'm looking at some sample iPhone code, and in the app delegate's applicationDidFinishLaunching method, I see// Set up the view controllerMyViewController *aViewController = [[MyViewController alloc] initWithNibName:@"HelloWorld" bundle:[NSBundle mainBundle]];self.myViewController = aViewController; [aViewController release];I'm a little confused - I see an allocation, followed by an assignment, followed by a release. I think that the assignment is really a call to a setter - the myViewController field is created automagically using the @property/@synthesize syntax.
The expression "self.myViewController" is using "dot syntax". Objective-C 2.0 dot syntax always resolves to accessor calls. It is not a consequence of using declared properties, synthesized or not. It works even with old-style, manually-written properties and accessors.
That said, the property declaration gives you good information about the semantics of how the property behaves -- again, regardless of whether it's synthesized or implemented manually. In this case, it should tell you that the property retains what's assigned to it, which is why the view controller is not deallocated while it's still being used.
Cheers, Ken _______________________________________________ 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
