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What is an optional in swift?


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More Apple iOS Swift Interview Questions

Is swift a good language?

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What is difference between single and double, in swift?

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Is swift an oop?

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What are the advantages of using swift?

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Explain the difference between let and var in swift programming?

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What is dynamic dispatch swift?

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How can we define a base class in swift?

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How will you connect ui?

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The following code snippet results in a compile time error: struct IntStack { var items = [Int]() func add(x: Int) { items.append(x) // Compile time error here. } } Explain why a compile time error occurs. How can you fix it?

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Why do we use swift? Mention some advantages of swift?

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What is forced unwrapping? Why is it potentially unsafe?

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What is forced unwrapping?

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