What is a category and when is it used?
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Differentiate between ‘assign’ and ‘retain’ keyword.
What is difference between weak and strong in ios?
Describe @objc inference?
What’s the difference between not-running, inactive, active, background and suspended execution states?
What is category and extension in ios?
What is messaging? What is message forwarding?
Difference between nil and Nil.
What is the protocol in ios?
Explain what is garbage collection?
Explain the correct way to manage Outlets memory in iOS.
Which is the state an app reaches briefly on its way to being suspended?
What are ui elements and some common ways you can add them to your app?