What is the responder chain?
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What is synchronized() block in objective c? What is the use of that?
Describe what “app thinning” means ?
Explain me what is fast enumeration?
Explain Inapp purchase in iOS
What is dynamic in iOS operating system?
When would you say that an app is not in a running state?
What is singleton in ios swift?
What’s the difference between an “app id” and a “bundle id” and what is each used for?
What is synchronous web request and asynchronous ?
What is @dynamic and any place where it is used?
Push notification working in ios?
What are layers?