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▶️ Question 01
What is SwiftUI? Explain the fundamental difference between the declarative programming style of SwiftUI and the imperative programming style of UIKit.

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📚 From One Question to a Knowledge System
This SwiftUI series expands into 50 carefully designed questions, covering:
Declarative UI & state-driven thinking
Data flow, architecture, and performance
Layout, animation, and concurrency
The YouTube playlist is only the surface.
InsightFlow is where understanding is structured, connected, and retained.
🚀 InsightFlow is not about watching more videos.
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50 Video SwiftUI List
Question 01
What is SwiftUI? Explain the fundamental difference between the declarative programming style of SwiftUI and the imperative programming style of UIKit.

Question 02
Why is a View in SwiftUI implemented as a struct (value type) instead of a class (reference type) like UIViewController in UIKit?

Question 03
How does the body property work in SwiftUI, and what is the role of @ViewBuilder?

Question 04
What is a ViewModifier and how does it work? Why does the order of modifiers matter?

Question 05
What are EnvironmentValues used for? Give an example of a value accessible via @Environment.

Question 06
Explain the difference and use cases of @State and @Binding.

Question 07
Differentiate between @ObservedObject and @StateObject. When should you use @StateObject?

Question 08
How does @EnvironmentObject differ from @StateObject and @ObservedObject in managing shared data?

Question 09
What is the role of the ObservableObject protocol and the @Published property wrapper in SwiftUI’s data flow?

Question 10
When would you choose to use @AppStorage? How does it work internally?

Question 11
In an ObservableObject ViewModel, how can you notify Views of changes if a property is not marked with @Published?

Question 12
What is the difference between passing an ObservableObject via @ObservedObject and passing a @Binding to one of its properties?

Question 13
How does the SwiftUI layout system work? Explain the three-step process: Proposal, Decision, and Assignment.

Question 14
What are the core differences between VStack, HStack, and ZStack?

Question 15
When should you use LazyVStack or LazyHStack instead of regular VStack or HStack?

Question 16
What is the purpose of GeometryReader? What are its common pitfalls?

Question 17
How do you create an efficient grid layout with flexible cell sizes in SwiftUI?

Question 18
How do you use frame(idealWidth:maxWidth:maxHeight:alignment:) to control a View’s size?

Question 19
When should you use padding() versus offset() in SwiftUI?

Question 20
How do you navigate between Views in SwiftUI? Differentiate between NavigationStack and TabView.
...