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Objective-C Interview Questions
Questions Answers Views Company eMail

Explain the types of protocol?

1

How to call function in objective-c?

1

what is gcd? What are advantages over nsthread?

1

Can delegates be retained?

1

What is class extension?

1

Why do we require class extension?

1

What are nsautoreleasepool? When to use them?

1

What is toll-free bridging? When is it useful?

1

When is toll-free bridging useful?

1

What happens when you create a block?

1

What are the types of ios binaries you can create using xcode?

1

Explain how to call function in objective-c?

1

Are id and instancetype same? If not, what are differences between them?

1

What happens with the objects if the array is released?

1

Explain what is dot notation?

1


Post New Objective-C Questions

Un-Answered Questions { Objective-C }

Is nsobject a parent class or a derived class?

1


How to implement in app purchase in ios objective c?

1


How to declare global variable in objective c?

1


Explain when to use nsarray and nsmutablearray. Which one is faster and threadsafe?

1


How would I make a static strategy?

1


How is #import different from #include?

1


What is the use of synchronized() block in objective c?

1


How dispatch_once runs only once?

1


How declare methods in objective c?

1


When should you call dealloc method? Is it possible to implement dealloc in arc?

1


What is a protocol in objective c?

1


What are the adavantages of gcd over nsthread?

1


What is meant by not thread safe?

1


What is an instancetype?

1


What are the delegate?

1