R System

 Date: June 2025

1. What type of security you take care when you are developing mobile application?
2. What kind of data you are sharing with backbase (third party framework)?
3. How you can trust third party (backbase) unit when you can sending data by service?
4. Difference between .xcframework and .framework.
5. Why people should choose MVVM rather than MVC?
6. If I can write UI part at top and business login at bottom, so I can get same coverage using MVC, then why MVC?
7. Why did you choose MVVM instead of other architecture as Lead?
8. If you syncing data in background mode, How you can sure that you are getting updated data or you are seeing data on mobile app is updated one?
9. You have one ParentView and 3 custom views ViewA, ViewB, ViewC. So I want to display only one view depending on whatever string I am passing. Support I am passing ViewA, then ViewA should be displayed. Write a code for that. Use a propertywrapper.
10. Can you use custom SwiftUI view in UIViewController?
11. What is meaning of some in var body: some View { ?
12. what is difference between any and some? What will happen when we use any instead of some on above question?
13. What is state in swiftui?
14. what is difference between state and stateobject?
15. In view model, what data should be, state or stateobject?
16. In viewmodel, declared as observedobject or stateobject?
17. In SwiftUI, instead of using struct to make View, if we used class what happened? Why we use struct?
18. What ViewController is alway class and View in swiftUI is struct?
19. Which you are going to use, class or struct, how you decide?
20. How can you sure that  a class is thread safe?
21. How many places you used actor in your project as it is thread safe instead of class?
22. Without using actor, how you can make your class thread safe? Ans: Confirm sendable protocol.
23. What is closure?
24. Can you write a code for closure and pass this to function and use it?
25. Write a code url session to fetch data and use completion handler here. Use Result. Decode in success block and send data to back.
26. In above we want to generic data to fetch. Instead of One model, I want to write a method to fetch data generic way.
27. What are property wrappers in swiftui?
28. Can we create custom property wrapper?
29. var arr = ["str", 1, nil] as [Any?] -> Filter array with having only string values.