[iOS Architecture #4] MVP vs MVVM: Key Differences
One question comes up repeatedly in iOS architecture interviews.
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Follow the trail from foundational concepts to practical engineering decisions.
[Vibe Coder #2] What is an API, and why must API keys be hidden?
In Part 1, I compared an app to a restaurant: dining area (frontend), kitchen (backend), and storage (DB). This time, we cover the topic most likely to cause trouble in vibe coding: APIs—and API keys. Everyone has seen “Never expose your key,” but few explain what the key is, where it lives, or what happens when it leaks. This article covers it all.
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Swift Facade Pattern: Hiding a Complex Subsystem Behind One Method
The Facade pattern provides a single, simple entry point to a subsystem involving multiple objects. Using a Swift sign-up example, this article explains how to centralize call order and how Facade differs from Adapter, Proxy, and Decorator.
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Swift Chain of Responsibility Pattern and the UIResponder Chain
When building an iOS app with Swift, you may have wondered why this view controller receives an event after you tap a button.
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[Modularization #4] Start iOS Modularization with SPM
The previous modularization articles covered the principles of boundaries, dependency direction, and layer structure. Now it is time to apply them to an iOS project.
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