What is singleton class in ios?
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What is singleton pattern in ios?
What is the purpose of reuseidentifier? What is the benefit of setting it to a non-nil value?
What is the difference between atomic and nonatomic properties?
What performance issues can you face when using coredata?
Which API is used to write test scripts that help in exercising the application's user interface elements?
What coding language is used for ios apps?
Explain arc?
Tell me what is iphone os?
What is difference between nsnotification and delegate?
What are layer objects and what do they represent in iOS operating system?
What is difference between weak and strong in ios?
Explain the difference between inheritance and category?