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Five tracks, 17 concepts. Each one is a structured lesson — an explanation, an analogy, a diagram you can step through, real code, the common mistake, and a question an interviewer would actually ask.

• Swift

  The language itself — types, optionals, closures and protocols.

  4 concepts · 4 interview questions

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• Memory Management

  ARC, ownership, and the cycles that leak when ownership is unclear.

  4 concepts · 4 interview questions

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• Concurrency

  async/await, actors, and the type system that makes data races a compile error.

  4 concepts · 4 interview questions

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• UIKit

  View controllers, events, and the framework SwiftUI still sits on top of.

  2 concepts · 2 interview questions

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• SwiftUI

  Declarative views, state ownership, and how the framework decides what to redraw.

  3 concepts · 3 interview questions

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