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Alexandre Alcuvilla

@screwdriver

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#SwiftUI #Swift #DesignPattern #CleanArchi #iOS

Joined January 2022

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Alexandre Alcuvilla's blogs

SwiftUI Centralswiftuicentral.com12 posts

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AAAlexandre Alcuvillaswiftuicentral.com22h ago · 8 min read

Test-Driving a Cache Layer in SwiftUI

In previous articles, we built a CachingFeedRepository by writing the implementation first and tests after. That works — but it leaves a subtle gap: the tests are shaped by the implementation you alre

AAAlexandre Alcuvillaswiftuicentral.comMay 8 · 8 min read

Single Responsibility: Breaking Up Fat ViewModels in SwiftUI

The Single Responsibility Principle (SRP) states that a class should have one reason to change. It's the first letter of SOLID, and arguably the one most frequently violated in SwiftUI projects. The c

AAAlexandre Alcuvillaswiftuicentral.comMay 2 · 7 min read

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

AAAlexandre Alcuvillaswiftuicentral.comApr 22 · 8 min read

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

AAAlexandre Alcuvillaswiftuicentral.comApr 21 · 5 min read

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,

Alexandre Alcuvilla

About

Available for

Alexandre Alcuvilla's blogs

Recently published

Test-Driving a Cache Layer in SwiftUI

Single Responsibility: Breaking Up Fat ViewModels in SwiftUI

Applying the Decorator Pattern in SwiftUI to Add Caching Without Changing Existing Code

Clean Architecture in SwiftUI: Separating Domain, Data, and Presentation

Dependency Injection in SwiftUI: Composing Views Without Singletons

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Alexandre Alcuvilla

About

Available for

Alexandre Alcuvilla's blogs

Recently published

Test-Driving a Cache Layer in SwiftUI

Single Responsibility: Breaking Up Fat ViewModels in SwiftUI

Applying the Decorator Pattern in SwiftUI to Add Caching Without Changing Existing Code

Clean Architecture in SwiftUI: Separating Domain, Data, and Presentation

Dependency Injection in SwiftUI: Composing Views Without Singletons