What is the difference between delegates and notifications in iOS operating system?
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What is atomic and nonatomic in iOS operating system? What is run loop in iOS ?
What is the use of 'dynamic' keyword?
What are layer objects?
Are ios developers in demand?
What is the use of controller object UIApplication?
Explain differences between foundation and corefoundation
How can mobile application errors be prevented?
What is managed object context?
What is the difference between cocoa and cocoa touch?
What happens when you invoke a method on a nil pointer?
What are design patterns in ios?
Explain UIView life cycles