What is completion handler in ios?
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Explain me how to parse json?
What is iphone?
What is block in ios swift?
What ios version onwards arc can be used?
How to implement "load more" using nsfetchedresultscontroller?
Difference between nil and Nil.
What is automatic reference counting (arc)?
Explain app id?
What are extra features added in ios 9?
What does @dynamic mean?
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 is nsfetchedresultscontroller? How do you turn on content monitoring?