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Swift Interview Questions and Answers

Test your skills through the online practice test: Swift Quiz Online Practice Test

Ques 46. What is the purpose of the 'autoreleasepool' in Swift?

The 'autoreleasepool' is used to manage the lifecycle of objects in memory, especially in performance-critical code or when working with Objective-C APIs.

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Ques 47. Explain the role of the 'UIApplicationDelegate' in a Swift app.

The 'UIApplicationDelegate' is a protocol in Swift that defines methods for handling app lifecycle events, such as app launch, termination, and background execution.

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Ques 48. What is a typealias in Swift, and when would you use it?

A typealias is used to create a named alias for an existing type. It is useful for making code more readable and for simplifying complex type declarations.

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Ques 49. Explain the concept of method swizzling in Swift.

Method swizzling is a technique used to exchange the implementation of methods at runtime. It's often used for extending or modifying the behavior of existing classes.

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