Introduction

Design patterns in SwiftUI, like in any programming framework, help organize code and promote maintainability, scalability, and readability. SwiftUI is a modern declarative framework, and it encourages the use of design patterns that fit its paradigm. Here are 7 common design patterns in SwiftUI:

1. MVVM (Model-View-ViewModel): This is a widely used pattern in SwiftUI. It separates your code into three components:
   • Model: Represents your data and business logic.
   • View: Represents the UI and its structure.
   • ViewModel: Acts as a bridge between the Model and View, preparing data for the View and handling user interactions.
2. Observable Object: SwiftUI provides the ObservableObject protocol to make data observable. It’s often used in conjunction with the @Published property wrapper. An observed object can notify views when its data changes.
3. EnvironmentObject: This is a way to share data throughout your SwiftUI app. It’s especially useful for global settings or user data that many views need access to.
4. Dependency Injection: SwiftUI makes it easy to pass data down the view hierarchy. You can inject dependencies directly into views or view models to make your code more modular and testable.
5. Combine Framework: Combine is a powerful framework for handling asynchronous and event-driven code. It works well with SwiftUI and can be used to create reactive data flows.
6. Coordinator: In more complex SwiftUI apps, you might use the Coordinator pattern to manage navigation and other complex UI components. This is often used with UIKit integrations.
7. ViewModifiers: SwiftUI allows you to create reusable view modifiers to encapsulate and share view styling and behavior.

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