Too Many Parameters? Use This Pattern

🧱 Build software that lasts. Join the Software Design Mastery waiting list → arjan.codes/mastery. Functions with long parameter lists often become harder to understand and maintain as a codebase grows. In this video, I show how the Parameter Object Pattern can help by turning related parameters into a meaningful concept. I look at the benefits, the trade-offs, and why you should be careful not to introduce unnecessary coupling. I’ll also show how this pattern works nicely with Python’s structural pattern matching. 🔥 GitHub Repository: git.arjan.codes/2026/param. 🎓 ArjanCodes Courses: arjancodes.com/courses. 💬 Join my Discord server: discord.arjan.codes. ⌨️ Keyboard I’m using: amzn.to/49YM97v. 🔖 Chapters: 0:00 Intro 1:32 The Problem: Parameters Spreading Everywhere 2:54 The Missing Concept: VideoSearchQuery 4:54 Add Validation to the Object 7:03 Easier API Evolution 8:04 Sometimes the Boundary Is Wrong 8:46 The Caveat: Stamp Coupling 10:12 Pattern Matching Becomes More Expressive 12:50 Final Thoughts #arjancodes #softwaredesign #python