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iOS Developer Interview Questions

What are the advantages and disadvantages of SwiftUI compared to UIKit?

Suggested approach: Try to be thoughtful here – coming down hard on one side rather than the other isn’t a good look, so instead try to think about what each framework does well and less well.

For example, UIKit gives us endless customizability, for example, as well as access to almost the full range of iOS UI tools, but takes a lot more code to use and you need to handle all the state changes properly. On the other hand, SwiftUI gives us access to fewer iOS components, but takes less than a fifth of the amount of code to write and does a huge amount of extra work for us.

  Estimated difficulty: Easy

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Important notes

  • There are over 150 interview questions in the system. Once you've read the question and come up with a suitable answer, try reading my suggested approach and see if it helps you add more detail.
  • These questions are not designed to be hard; a good interviewer is more interested in generating discussion that lets your ability and interests shine through.
  • If you answer a question with "yes" or "no" you've missed the point – interviewers prefer you to provide reasoning, explanation, or detail, so try to elaborate with examples!
  • If you're looking for detailed technical questions about the language, you should try my Swift tests instead – there are multiple challenges that will work your brain hard.
  • For a whole series of coding challenges, I wrote the perfect book for you: Swift Coding Challenges.

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