The Composition Root Pattern in SwiftUI Apps
Every article in this series has ended with the same instruction: wire everything at the Composition Root. We've used it as the place where RemoteFeedRepository meets CachingFeedRepository, where User
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Applying the Decorator Pattern in SwiftUI to Add Caching Without Changing Existing Code
You've built a clean feed feature. The RemoteFeedRepository fetches items from the network, the LoadFeedUseCase runs the business logic, and the ViewModel drives the view. Everything is tested and wor
Clean Architecture in SwiftUI: Separating Domain, Data, and Presentation
Most SwiftUI apps start simple. A ViewModel fetches data from an API, maps it to a model, and drives a view. It works. But as the app grows, the ViewModel becomes a god object: it knows about URLs, JS
Dependency Injection in SwiftUI: Composing Views Without Singletons
One of the most common pitfalls in SwiftUI apps is the overuse of singletons and global state. It feels convenient at first — you just reach for UserDefaults.standard, a shared NetworkService.shared,
SwiftUI - Decoupling Models
Problem: How can we avoid breaking an entire app when a model changes? Solution: Decouple each model based on their specific domain. A Deeper Dive When working with data from various sources, a common challenge developers face is the potential for e...
SwiftUI - TDD actor to avoid race condition
Problem: How to avoid threading race conditions in your class? Solution: Use actor that handles all the concurrency for you! Code that runs synchronously is easy to manage and understandBut when start introducing threads, problems occurYou need to ma...
SwiftUI - TDD async/await
Problem: How to TDD async/await ? Solution: Stub the response, async function needs to know it's result before call IMPORTANT: This tutorial is only available for iOS 15+It will use the async/await integration in URLSessionAnd the AsyncImage SwiftUI ...