What is use of nsoperation?
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What persistent storage core data uses to save data?
What is the protocol in ios?
Explain the difference between viewdidload and viewdidappear?
What is nsfetchedresultscontroller? How do you turn on content monitoring?
Which api would you use to write test scripts to exercise the application’s ui elements?
What is meaning of 'readonly' keyword?
What are kvo and kvc?
What is a delegate xcode?
What are ios apps written in?
What are layer objects and what do they represent?
Explain which all events will perform an ios application in background
How to deal with sqlite database?