Why Singletons Block Testing—and How Dependency Injection Solves It
Have you ever spent all night stuck because a Singleton made testing impossible?
Read articleARCHIVE · 33
All articles
Follow the trail from foundational concepts to practical engineering decisions.
Dependency Injection (DI): Moving new Outside the Class
We often create required objects right where they are needed in the code. But the moment you try to write tests, you hit a wall. The creation code is embedded inside the class, so you cannot swap it out.
Read article
[Swift Basics #2] Closure Captures, weak self, and escaping
Closures are everywhere in Swift code. But many developers still struggle to explain exactly what capture means, why [weak self] is used, and why @escaping is needed.
Read article
Swift Adapter Pattern: Wrapping Legacy APIs in Protocols
The Adapter pattern converts a legacy API's interface into a protocol expected by new code. This guide covers how to create a conversion boundary in Swift, simplify replacement and testing, and distinguish it from other wrapping patterns.
Read article
Comparing 6 macOS terminal apps: iTerm2, Ghostty, or Warp?
For developers using a Mac, the terminal is probably the app they keep open the longest each day. Yet surprisingly, many people keep using the default Terminal for years.
Read article