How do I add feature flags to toggle UI in Combine with Swift?

In this example, we'll explore how to implement feature flags in a SwiftUI application using Combine. Feature flags allow you to toggle features on and off without deploying new code, making them essential for incremental development and A/B testing.


        import SwiftUI
        import Combine
        
        class FeatureFlags {
            @Published var newFeatureEnabled: Bool = false
            // You can add more feature flags as needed
            
            init() {
                // Load feature flags, potentially from a remote config
                self.loadFeatureFlags()
            }

            private func loadFeatureFlags() {
                // Simulate loading feature flags, e.g., from a server or configuration file
                self.newFeatureEnabled = true // This would be dynamically fetched
            }
        }

        struct ContentView: View {
            @StateObject var featureFlags = FeatureFlags()
            
            var body: some View {
                VStack {
                    if featureFlags.newFeatureEnabled {
                        Text("New Feature is Enabled!")
                            .padding()
                            .background(Color.green)
                    } else {
                        Text("New Feature is Disabled.")
                            .padding()
                            .background(Color.red)
                    }
                    
                    Button(action: {
                        featureFlags.newFeatureEnabled.toggle()
                    }) {
                        Text("Toggle Feature")
                    }
                }
                .padding()
            }
        }

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

How do I add feature flags to toggle UI in Combine with Swift?

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How do I add feature flags to toggle UI in Combine with Swift?

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