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

Objective-C Interview Questions

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What is an instancetype?

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

How is #import different from #include?

Is nsobject a parent class or a derived class?

What are nsautoreleasepool and how can we use them?

Is there function overloading in objective-c?

Is it possible to implement dealloc in arc?

What is protocol in objective-c?

How dispatch_once runs only once?

What is the difference between atomic and nonatomic synthesized properties?

What is a delegate? Can you retain delegates?

What is id?

Who introduced objective-c & when?

What are the blocks? How will you use them?

What is dot notation?

Un-Answered Questions { Objective-C }

When will you use nsarray and nsmutablearray?

Is objective c garbage collected?

Is objective c open source?

Explain what is @synthesize in objective-c?

How to make a code snippet thread safe?

What is protocol in networking?

Why swift is faster then objective c?

What is #import?

How to initialize nsmutabledictionary in objective c?

How to declare global variable in objective c?

Is objective-c is used in window also?

What is responder chain?

What is objective c runtime?

What is the latest version of objective-c?

How do I create an objective c class in xcode?

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