Is core data is thread safe?
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Is the delegate for a CAAnimation retained in iOS operating system?
Explain How to access document directory
what are the controllers are available in objective C
List the devices compatible with ios 11? : IOS Architect
What is mvp in ios?
What major changes released in ios7, ios8, ios9+?
Explain inheritance?
What are the App states in iOS operating system? Explain them
What is an iphone app?
Explain app's state transitions when it gets launched?
How are non-atomic and atomic properties different? Which one is the default property for synthesized properties? When would a user operate one over the other?
If you use location services in your app, will it drain your battery.if yes? How can we avoid?