5 Clean Code Practices You Must Know Before You Start Coding

Practical lessons from years of writing and maintaining code

Ahmet Emre DEMİRŞEN

5 min read

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May 25, 2026

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In this article, we will walk through five clean code practices that will save you countless hours of debugging and refactoring if you’d known them from day one. These aren’t theoretical concepts — they’re battle-tested habits that make your code readable, maintainable, and less painful to revisit six months later.

Table of Contents

1. Naming things properly (it’s harder than it sounds)
2. Functions should do one thing
3. Avoid deep nesting with early returns
4. Comments are a code smell
5. Keep your classes small and focused

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1. Naming Things Properly (It’s Harder Than It Sounds)

Let’s be honest — we’ve all written code like this:

int d; // elapsed time in days

What does d mean? Elapsed time? Days? Distance? Sure, the comment explains it, but why force someone to read a comment when the variable name can tell the story?

int elapsedTimeInDays;