I would say that the steepest learning curve for someone new to iOS development is having to manage your own memory using reference counting. Knowing when to retain and when to autorelease can seem like a black art until you understand the conventions which is used (extremely consistently, I might add) within Objective C libraries. Let's examine one very common mistake, which I will call the Property Assignment Memory Leak. I've seen this a few times, and indeed committed this error myself du...
