What are design patterns in ios?
Why iphone apps are popular?
What is singleton pattern in ios?
What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?
what are the source items used by Xcode?
How to represent layer objects in iOS operating system ?
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How does the runtime handle message passing? What is message forwarding?
What language is ios written in?
DB updation when app new version comes ?
Explain how an autorelease pool works at the runtime level
what is dispatchQueue?
Why don’t we use strong for enum property in objective-c ?
Which app specific objects store the app's content?