Objective-C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Objective-C Interview Questions

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Can a static library (.a) contain resources like images, sound files etc?

What is the difference between underscore and self (i.e self.xx and _xx) ?

When might you use a cfarray/dictionary instead of a nsarray/dictionary?

What is a process and thread?

What are blocks and how are they used?

Can I write some c++ function in same .m file? Will it compile? If no, what changes should I do to compile it?

What are the adavantages of gcd over nsthread?

What is class extension? Why do we require them?

When to use nsautoreleasepool??

Un-Answered Questions { Objective-C }

Can you write setter method for a retain property?

What is a nsstring?

What are the different types of protocols?

What is method swizzling in objective c and why would you use it?

What is lazy var?

What is typedef objective c?

How do you define a block?

What is a delegate objective c?

What are nsautoreleasepool and how can we use them?

What are kvc and kvo? Provide an example.

What is a hash string?

What is a .m file?

What happens with the objects if the array is released?

How to call function in objective-c?

How much does m files cost?

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