What is category in ios?
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Explain me app bundle?
What is sandbox in iOS operating system?
What is a struct?
What is the responder chain?
How can a user respond or react to the state transitions on the app?
what is the use of PO command in Xcode?
What is nonatomic?
Explain parent-child context setup. How does it work?
What is arc and how is it different from autorelease?
If you use location services in your app, will it drain your battery.if yes? How can we avoid?
Does objective-c contain private methods?
What is a delegate xcode?