What is core data?
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What is plist file and explain about it is usage in iOS operating system?
what is the difference between nonatomic & atomic ? which is thread safe and why
Explain arc?
When is an app said to be in active state?
What is iOS?
What is ios viewwillappear?
What is meaning of 'atomic' keyword?
What are the different delete rules that a relationship can have? Which one takes ownership?
How do you stop apps running in the background on ios?
What is latest mac os version?
What is the benefit of setting reuseidentifier to a non-nil value?
What is push notification?