A list of over 60 Swift and iOS questions asked during technical interviews.

Comments are welcome, including additional questions, alternative answers, and any corrections or clarifications.

Up-to-date for Swift 5.1

Swift and ObjC language

What’s Swift?

• A hybrid (function / object-oriented) modern language build to be concise and expressive

What’s Objective C?

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A list of helpful methods and syntax to reference before coding challenges and whiteboard interviews.

Download: SwiftCheatsheet.playground

Last update on 2020-09-22 for Swift 5.1

String

• string.map { $0 } // Convert String to Character array
• s[s.index(s.startIndex, offsetBy: i)] // Character at "i"
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