What is the difference between retain & assign in iOS operating system?
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Why iphone apps are popular?
What is background mode in ios?
Have you uploaded app on appstore? What is the process?
How can we use NSOperation queue? what is the advantage of using it ?
What is mvc in ios?
What is the purpose of ios?
How can mobile application errors be prevented?
What is mvc design pattern in ios?
How to parse json?
Explain me how to parse xml?
What is nsfetchedresultscontroller? How do you turn on content monitoring?
What is iphone architecture?