How different is swiftUI with respect to UIKit?

SwiftUI and UIKit are both iOS development frameworks, but they differ significantly:

SwiftUI: Declarative UI design
UIKit: Imperative UI construction

2. Code Complexity

SwiftUI: Shorter, more readable code
UIKit: More verbose, requires more manual configuration

3. Layout Approach

SwiftUI: Uses modern compositional layouts with stacks and modifiers
UIKit: Relies on Auto Layout and frame-based positioning

4. State Management

SwiftUI: Built-in state and binding mechanisms
UIKit: Manual state tracking, requires more boilerplate code

5. Platform Support

SwiftUI: iOS 13+, more limited backward compatibility
UIKit: Supports older iOS versions comprehensively

6. Performance

SwiftUI: Generally more performant for modern apps
UIKit: Mature, optimized framework with deep system integration

While SwiftUI is increasingly preferred for new projects, UIKit remains crucial for complex or legacy app developments.