Delegates and Memory Leaks in iPhone?

I have a tableview(being IBOutlet) and tableviewController in my ViewController

what I do is

//.... allocation for tableviewController self.tableview.delegate = tableviewController;

//now t开发者_如何学编程his increases the retain count of tableviewController...

So in deallocation do I need to set the tableview delegate to nil...like

self.tableview.delegate = nil; or self.tableview = nil; // is sufficient to make sure that the retain count of tableviewController get decreased by 1.

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The tableView already realeases its delegate in its dealloc method, so you should be ok without having to explicitly set the delegate to nil.

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The table view does not retain its delegate:

@property(nonatomic, assign) id<UITableViewDelegate> delegate

The reason is that retaining would likely cause a retain cycle. See Avoiding retain cycles rule #3: "Connection" objects should not retain their target. To keep the delegate alive, you must maintain a reference to it yourself somewhere.