Answer / Nirmal Kumar

"To use an Objective-C file in Swift, you can create a bridging header. In the bridging header, import the .h file of your Objective-C class using #import. Then, you can use instances of that class in your Swift code."

What is block in objective c?

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Explain what are the attributes of category?

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Which is better swift or objective c?

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Can protocols have properties?

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What does @synchronized() do?

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Does a thread created using performselectorinbackground:withobject: creates its own autorelease pool?

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What is nonatomic in objective c?

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What is synchronized() block in objective c?

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What are class b properties?

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Is objective c dynamically typed?

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When will you use nsarray and nsmutablearray? Which one is faster?

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How do you get closure?

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