FREE TRIAL: Accelerate your app development career with Hacking with Swift+! >>

iOS Developer Interview Questions

What are conditional conformances?

Suggested approach: You should already know that protocol conformances allow us to say that one type conforms to a protocol such as Hashable or Equatable, but this question is asking about conditional conformances – conforming to a protocol only if a condition is true. Make sure and give a practical example, such as Array conforming to a Purchaseable protocol only if it contains elements that also conform to Purchaseable.

  Estimated difficulty: Advanced

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.

Related questions

See the full list of iOS interview questions

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.