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iOS Developer Interview Questions

How has Swift changed since it was first released in 2014?

Suggested approach: This can either show how long you’ve been writing Swift, or it can show you have an interest in the language’s evolution. You might talk about the addition of try/catch, guard, and defer in Swift 2, the massive Cocoa renaming from Swift 3, the introduction of Codable in Swift 4, the changes for SwiftUI in Swift 5.1, or really whatever takes your interest.

  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.

Related questions

See the full list of iOS interview questions

 
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