import SwiftUI

struct TransitionDemo: View {
  @State private var show = false
  var body: some View {
    VStack(spacing: 12) {
      Button(show ? "Hide" : "Show") {
        withAnimation(.easeInOut) { show.toggle() }
      }
      if show {
        Text("Hello")
          .padding(12)
          .background(.blue.opacity(0.1))
          .cornerRadius(8)
          .transition(.opacity.combined(with: .scale))
      }
    }
  }
}

                    

import SwiftUI

struct ContentView: View {
  var body: some View {
    TransitionDemo()
  }
}

                    

import SwiftUI

@main
struct MyApp: App {
  var body: some Scene {
    WindowGroup { ContentView() }
  }
}