Deinit never called

Question

I\'m creating a ViewController object an pushing it to a navigation controller. When the object is being popped from the stack - it is not being release and Deinit is not be

Answer 1

I had a timer in my view controller, running every minute to update a label. I put a call in deinit to invalidate the timer, which I'm pretty sure is what I've always done in Objective-C (in dealloc) and it's worked. But it seems a little different in Swift so I moved the time creation/invalidation code to viewWillAppear/viewWillDisappear (which makes more sense really) and everything seems fine now!