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iOS Developer Interview Questions

What does the #available syntax do?

Suggested approach: This syntax was introduced in Swift 2.0 to allow run-time version checking of features by OS version number. It allows you to target an older version of iOS while selectively limiting features available only in newer iOS versions, all carefully checked by the compiler to avoid human error.

  Estimated difficulty: Intermediate

See the full list of iOS interview questions

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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