ArjanCodes
On this channel, I post videos about programming and software design to help you take your coding skills to the next level. I'm an entrepreneur and a university lecturer in computer science, with more than 20 years of experience in software development and design. If you're a software developer and you want to improve your development skills, and learn more about programming in general, make sure to subscribe for helpful videos. I post a video here every Friday. If you have any suggestion for a topic you'd like me to cover, just leave a comment on any of my videos and I'll take it under consideration. Thanks for watching!
Channel created: January 01, 2017
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10 Python Features You’re Not Using (But Really Should)
💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. Python has a lot of powerful features hiding in plain sight, and many developers never really use them. In this vi...
This Design Pattern Scares Me To Death
👉 Get real-time, search result data from Google, Youtube and more with SerpApi: https://serpapi.link/arjan-codes-jan-2025. Business rules have a nasty habit of spreading across your codebase: copi...
7 Things You Didn’t Know Dataclasses Could Do
💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. Dataclasses are often treated as nothing more than a shortcut for generating init methods, but there’s a lot more ...
The Right Way to Use AI for Writing Maintainable Code
🧱 Build software that lasts. Join the Software Design Mastery waiting list → https://arjan.codes/mastery. AI can write code, but without solid software design, it quickly turns into an unmaintaina...
I Made a Classic Refactoring Mistake
💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. In my previous video on refactoring complicated business logic, I made several mistakes and you spotted them. In t...
How to Tell If Your Code Is Actually Production-Ready
💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. Your code works locally: you’ve tested the endpoint, the numbers add up, and everything looks fine in the terminal...
Retry Pattern: The Secret to Resilient Python Code
👉 Get real-time, search result data from Google, Youtube and more with SerpApi: https://serpapi.link/arjan-codes. This video shows you how to stop your Python code from crashing when APIs, network...
How to Refactor Insanely Complicated Business Logic (Step by Step)
💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. Untangling deeply nested if/else logic is one of the hardest parts of working in real-world Python codebases. In t...
The Lazy Loading Pattern: How to Make Python Programs Feel Instant
💡 Learn how to design great software in 7 steps: https://arjan.codes/designguide. In this video, I dive deep into the **Lazy Loading pattern,** one of the simplest and most effective ways to make ...
Stop Hardcoding Everything: Use Dependency Injection
→ Check out Thesys here: https://www.thesys.dev/?utm_source=youtube&utm_medium=creators&utm_campaign=arjan In this video, I explore how Dependency Injection can make your Python code cleaner, more...