MVVM Architecture
MVVM pattern, ViewModel, data binding, separation of concerns, testability
1What is a ViewModel in MVVM architecture?
What is a ViewModel in MVVM architecture?
Cevap
The ViewModel encapsulates business logic and manages view state independently from UIKit or SwiftUI. It bridges the Model and View layers while maintaining clear separation of concerns. This architecture enables unit testing and improves code maintainability and reusability.
2What are the main responsibilities of the Model in MVVM?
What are the main responsibilities of the Model in MVVM?
Cevap
The Model represents the data and business logic of the application. It defines data structures, enforces business rules, and remains independent from View and ViewModel layers. Model independence from UI frameworks ensures reusability and testability. It serves as the single source of truth for application data.
3What is the main role of the View in MVVM architecture?
What is the main role of the View in MVVM architecture?
Cevap
The View is responsible for displaying data and capturing user interactions. It should contain only presentation code and avoid business logic. The View binds to the ViewModel through data binding to remain simple and testable. In SwiftUI, use @ObservedObject or @StateObject to observe the ViewModel. In UIKit, use Combine to subscribe to changes.
What is data binding in the context of MVVM?
What is the difference between @Published and @ObservedObject in SwiftUI?
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