Tagged with clean

• Where Errors Belong: Use Case Outputs, Not Error Passed Around

  Published on 03 June 2026

  Most apps leak Error across boundaries and downcast in ViewModels. Model failures in the use case output vocabulary instead. Swift and Kotlin.

  • architecture
  • use-cases
  • clean
  • swift
  • kotlin
  • ios
  • android
  • errors

• Use Cases in iOS Apps: Helpful Boundary or Extra Layer?

  Published on 29 April 2026

  Learn when use cases help iOS architecture, when they add noise, and how to keep them focused in Swift apps.

  • use-cases
  • clean
  • architecture
  • swift
  • ios

• Testing Architecture, Not Implementation Details

  Published on 29 April 2026

  Learn how to test architecture in Swift by focusing on behavior, boundaries, contracts, and meaningful composition.

  • testing
  • architecture
  • swift
  • clean
  • maintainability

• The Composition Root in SwiftUI Apps

  Published on 28 April 2026

  Learn the composition root in pure SwiftUI apps using @main App, factories, observable object ownership, NavigationStack, previews, and environment tradeoffs.

  • architecture
  • composition
  • clean
  • modularity
  • swiftui

• The Composition Root in UIKit Apps

  Published on 05 February 2024

  Learn the composition root in UIKit apps using SceneDelegate, factories, flows, dependency wiring, and testable boundaries.

  • architecture
  • composition
  • clean
  • modularity
  • uikit

• Clean MVVM in SwiftUI: Use Cases, ViewModels, and Composition Root

  Published on 29 January 2023

  Learn clean MVVM in SwiftUI using use cases, view models, adapters, and composition root wiring.

  • mvvm
  • clean
  • swiftui
  • architecture
  • composition

• Practical Polymorphism in Swift: Protocols, Decorators, and Composition

  Published on 16 January 2023

  Learn practical polymorphism in Swift using protocols, decorators, strategies, and composition to keep growing codebases maintainable.

  • polymorphism
  • clean
  • modularity
  • architecture
  • composition