Swift Interview Questions For Freshers
  1. What is a protocol extension in Swift and how is it used?
  2. What are optionals in Swift and how are they used?
  3. How do you declare a variable in Swift?
  4. What is a guard statement in Swift and how is it used?
  5. What is a closure in Swift and how do you define it?
  6. How do you declare a function in Swift?
  7. How do you create a dictionary in Swift?
  8. What is the difference between a struct and a class in Swift?
  9. How do you use the if-else statement in Swift?
  10. What is a switch statement in Swift and how is it used?
  11. How do you create an array in Swift?
  12. How do you use a for-in loop in Swift?
  13. How do you create a tuple in Swift?
  14. What is an enum in Swift and how do you use it?
  15. What is the difference between a function and a method in Swift?
  16. How do you use the map function in Swift?
  17. How do you use the reduce function in Swift?
  18. What is a protocol in Swift and how do you use it?
  19. How do you use the guard statement with multiple conditions in Swift?
  20. What is a lazy property in Swift and how is it used?
  21. How do you use the defer statement in Swift?
  22. What is the difference between let and var in Swift?
  23. How do you use the try-catch statement in Swift?
  24. How do you use the where clause in Swift?
  25. What are the different types of storage options in iOS and how are they used in Swift?
  26. What are the different types of app architectures in iOS and how can Swift be used with them?
  27. How does Swift handle optionals and how can they be used to improve app stability?
  28. How can Swift be used to implement delegation in iOS apps?
  29. What are the most common types of errors that can occur in Swift and how are they handled in iOS apps?
  30. How can Swift be used to implement animations and transitions in iOS apps?
  31. What is the difference between a framework and a library in iOS development, and how can Swift be used with both?
  32. How can Swift be used to handle user input and touch events in iOS apps?
  33. How can Swift be used to implement custom user interfaces in iOS apps?
  34. How can Swift be used to integrate with third-party APIs and services in iOS apps?
  35. What are the best practices for naming variables and functions in Swift for iOS development?
  36. How can Swift be used to implement multi-threading and concurrency in iOS apps?
  37. What are the most common mistakes made by Swift beginners when developing iOS apps?
  38. How can Swift be used to handle networking and data persistence in iOS apps?
  39. What are some key differences between UIKit and SwiftUI in iOS app development and how can Swift be used with both?
Swift Intermediate Interview Questions
  1. What is a closure capture list in Swift and when is it needed?
  2. What is a protocol extension in Swift and how is it used?
  3. What is a typealias in Swift and how do you use it?
  4. What is the difference between a value type and a reference type in Swift?
  5. What is a computed property in Swift and how do you use it?
  6. How do you use the guard statement with a defer block in Swift?
  7. How do you use the didSet and willSet property observers in Swift?
  8. What is a throwing function in Swift and how do you use it?
  9. What is a property wrapper in Swift and how is it used?
  10. What is the difference between a static property and a class property in Swift?
  11. What is the difference between an asynchronous and a synchronous operation in Swift?
  12. What is a semaphore in Swift and how is it used?
  13. How do you use the filter function in Swift?
  14. How do you use the flatMap function in Swift?
  15. How do you use the zip function in Swift?
  16. What is the difference between a generic function and a protocol with associated types in Swift?
  17. How do you use the assert function in Swift?
  18. What is a trailing closure in Swift and how is it used?
  19. What is a type erasure in Swift and how is it used?
  20. What is a property observer in Swift and how do you use it?
  21. How do you use the defer statement with throwing functions in Swift?
  22. How do you use the guard statement with the optional binding in Swift?
  23. What is a nested function in Swift and how is it used?
  24. What is a higher-order function in Swift and how is it used?
  25. How do you use the @escaping keyword in Swift?
  26. How can Swift be used to implement custom layout for iOS apps?
  27. What are the best practices for implementing error handling in Swift for iOS development?
  28. How can Swift be used to implement machine learning and artificial intelligence in iOS apps?
  29. How can Swift be used to improve app performance and reduce memory usage in iOS apps?
  30. What are the best practices for implementing accessibility in Swift for iOS development?
  31. How can Swift be used to implement audio and video playback in iOS apps?
  32. How can Swift be used to implement push notifications and background processing in iOS apps?
  33. How can Swift be used to implement unit testing and UI testing in iOS apps?
  34. How can Swift be used to implement localization and internationalization in iOS apps?
  35. What are the most common pitfalls when using Swift with Objective-C in iOS development?
  36. How can Swift be used to implement custom views and controls in iOS apps?
  37. How can Swift be used to implement security features such as encryption and biometric authentication in iOS apps?
  38. How can Swift be used to implement in-app purchases and subscriptions in iOS apps?
  39. What are the best practices for implementing user preferences and settings in Swift for iOS development?
  40. How can Swift be used to implement background tasks and long-running processes in iOS apps?
Swift Interview Questions For Experienced
  1. What is a function builder in Swift and how is it used?
  2. What is a key path in Swift and how is it used?
  3. What is a metatype in Swift and how is it used?
  4. What is a variadic parameter in Swift and how is it used?
  5. What is a result type in Swift and how is it used?
  6. How do you use the guard statement with the where clause and optional binding in Swift?
  7. What is a function composition in Swift and how is it used?
  8. What is a monad in Swift and how is it used?
  9. How do you use the map, flatMap, and filter functions in combination in Swift?
  10. What is a type-level programming in Swift and how is it used?
  11. How do you use the recursive generic types in Swift?
  12. What is a functional programming paradigm in Swift and how is it used?
  13. What is a higher-kinded type in Swift and how is it used?
  14. How do you use the type constraints in Swift?
  15. What is a memoization in Swift and how is it used?
  16. How do you use the escape analysis in Swift?
  17. What is a type safety in Swift and how is it achieved?
  18. How do you use the reflection in Swift?
  19. What is a type inference in Swift and how is it used?
  20. What is a covariant and contravariant type in Swift and how is it used?
  21. How do you use the property wrappers in combination with generics in Swift?
  22. What is a higher-ranked polymorphism in Swift and how is it used?
  23. How do you use the typealiases in combination with generics in Swift?
  24. What is a variadic generics in Swift and how is it used?
  25. How do you use the function builders with generics in Swift?
  26. How can Swift be used to implement augmented reality and virtual reality in iOS apps?
  27. What are the best practices for implementing scalable and maintainable architectures in Swift for iOS development?
  28. How can Swift be used to implement custom layouts and transitions in iOS apps using UIKit dynamics?
  29. How can Swift be used to implement reactive programming and functional programming paradigms in iOS apps?