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Is swift an oop?


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More Apple iOS Swift Interview Questions

What is nil-coalescing operator?

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Explain enum in swift.

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What is an attribute in swift?

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struct Planet { var name: String var distanceFromSun: Double } let planets = [ Planet(name: "Mercury", distanceFromSun: 0.387), Planet(name: "Venus", distanceFromSun: 0.722), Planet(name: "Earth", distanceFromSun: 1.0), Planet(name: "Mars", distanceFromSun: 1.52), Planet(name: "Jupiter", distanceFromSun: 5.20), Planet(name: "Saturn", distanceFromSun: 9.58), Planet(name: "Uranus", distanceFromSun: 19.2), Planet(name: "Neptune", distanceFromSun: 30.1) ] let result1 = planets.map { $0.name } let result2 = planets.reduce(0) { $0 + $1.distanceFromSun } What are the types and values of the result1 and result2 variables? Explain why.

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What is static let in swift?

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What is a delegate in swift?

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Can you make a property optional?

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How would you define variables and constants in swift programming language?

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What is “defer”?

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What is swift stand for?

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What is the significance of “?” In swift?

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What are the higher order functions in swift?

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