#swift

Build modern iOS apps with SwiftUI. Components: 1. View protocol for custom views. 2. @State and @Binding for local state. 3. @ObservedObject for external state. 4. List with ForEach for collections. 5. Navigation with NavigationStack. 6. Async/await for data loading. 7. Custom view modifiers. 8. Animations with withAnimation. Use Combine for reactive programming and implement dark mode support with @Environment.

Explain the concept of Protocol-Oriented Programming (POP) in Swift. How does it differ from traditional Object-Oriented Programming (OOP)? Provide an example of how you can use protocol extensions to provide default implementations for methods.