What is the difference strong and weak reference?
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Explain the working of manual memory management?
how you can delete a smart group created in Xcode?
Explain the characteristics of ios?
What is nsfetchedresultscontroller? How do you turn on content monitoring?
What are the different delete rules that a relationship can have?
Explain how to delete images in ios?
Explain @property ,@synthesize
Explain what is the stack of autorelease pools. How autorelease pool work under the hood?
Explain @synchronized ,@dynamic
Is appdelegate a singleton?
what is Xcode?
Explain How to access document directory