What do you mean by optional chaining in swift?


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More Apple iOS Swift Interview Questions

Consider the following code: let op1: Int = 1 let op2: UInt = 2 let op3: Double = 3.34 var result = op1 + op2 + op3 Where is the error and why? How can it be fixed?

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What are the control transfer statements used in swift?

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What is nsrange in swift?

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In Swift enumerations, what’s the difference between raw values and associated values?

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What are the type of integers does swift have?

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How do I create a bridge header in swift 4?

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What is difference between any and anyobject in swift?

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What are swift categories?

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Do try catch swift?

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What is mutating keyword in swift?

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What is abstract class in swift?

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What is the synonym of swift?

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