What is optional binding?


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More Apple iOS Swift Interview Questions

What are the advantages of using swift?

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What is difference between 'let' and 'var' declaration ?

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What is the characteristics of switch in swift?

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Consider the following code: var array1 = [1, 2, 3, 4, 5] var array2 = array1 array2.append(6) var len = array1.count What’s the value of the len variable, and why?

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What is race condition in swift?

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What collection types are available in swift?

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Are arrays structs in swift?

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What is swift programming language?

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