What is synchronous web request and asynchronous ?
What is arc xcode?
What is difference between category and extension in ios?
What is callback in ios?
Enlist the methods to achieve concurrency in ios?
What major changes released in ios7, ios8, ios9+?
Garbage collector in iphone?
How do I create a class in xcode?
Why do all model object attributes get marked with @dynamic and not synthesised?
What is Delegation in iOS?
What are the benefits of swift over objective-c ?
What language is ios written?
How to parse xml? Explain