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6 Timeless Rules for Writing Clean Code

If you want your code to stay readable, scalable, and maintainable, follow these six principles:

1) Separation of Concerns (SOC)

  • Divide your program into small, independent parts.

  • Each part should do one thing well.

2) Document Your Code (DYC)

  • Write as if your future self (or another developer) will thank you.

  • Add clear comments and documentation for complex logic.

3) Don’t Repeat Yourself (DRY)

  • Avoid duplicating code.

  • Reuse functions, modules, and libraries whenever possible.

4) Keep It Simple, Stupid (KISS)

  • Simple > Clever.

  • Readability always beats over-engineered solutions.

5) Test Driven Development (TDD)

  • Write a failing test first.

  • Implement the code to pass the test.

  • Refactor without changing behavior.

6) You Ain’t Gonna Need It (YAGNI)

  • Don’t build features you “might” need someday.

  • Focus on what’s essential today.

🚀 Clean code isn’t just about elegance — it’s about building software that lasts.