Quick Tips

Clean Code Best Practices

1. Follow Consistent Naming Conventions

  • Use descriptive and meaningful names for variables, functions, and classes.
  • Prefer camelCase for variables and functions, and PascalCase for classes.
  • Avoid single-character names unless they serve a clear purpose (e.g., i in loops).

2. Write Small, Focused Functions

  • Functions should perform a single task (Single Responsibility Principle).
  • Aim for functions to be small and easy to understand, ideally 20-30 lines or fewer.

3. Avoid Code Duplication

  • Reuse code through functions, modules, or libraries.
  • Apply the DRY principle (Don’t Repeat Yourself).

4. Comment Wisely

  • Use comments to explain why the code does something, not what it does (the code should make that clear).
  • Write meaningful documentation for complex logic or APIs.

5. Adopt Consistent Code Formatting

  • Use a linter or formatter (e.g., ESLint for JavaScript, Prettier) to enforce coding standards.
  • Maintain proper indentation and spacing.

6. Handle Errors Gracefully

  • Implement proper error handling and logging.
  • Avoid swallowing exceptions; provide meaningful messages to help debugging.

7. Write Unit Tests

  • Cover critical code paths with automated tests.
  • Aim for high code coverage but prioritize testing core functionalities.

8. Keep Code Modular

  • Break your codebase into logical modules or components.
  • Follow the Separation of Concerns principle to avoid tangled dependencies.

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