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iOS Developer Interview Questions

What does the @State property wrapper do?

Suggested approach: Remember to start with a basic definition first, then provide a practical example. Here, that means saying the @State allows us to mutate a value that belongs to a struct without using mutating methods. When it comes to a practical example, almost any kind of value-type SwiftUI binding is good, such as storing text in a TextField.

  Estimated difficulty: Easy

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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