8. Avoid violating single responsibility. Prefer to use pure functions (no side effects)

Moment at 10:41 in My 10 “Clean” Code Principles (Start These Now) by Conner Ardman.

My 10 “Clean” Code Principles (Start These Now)

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• 1. Eliminate if/else branching; early termination
• 2. Ambiguous definitions: ‘is’ function prefix to denote boolean return
• 3. Self documenting code: avoid belaboured comments
• 4. Consistent formatting. Use Eslint + Prettier to automate code style
• 5. DRY business logic. Look for opportunities to refactor. Make sure to test!
• 6. Fail or exit functions fast. Related to 1.
• 7. Avoid magic values - declare and use CONSTANTS instead.
• 8. Avoid violating single responsibility. Prefer to use pure functions (no side effects)
• 9. Overly clever code (code golf). Leads to impenetrable single liners (have to rewrite in order to debug)
• 10. Premature optimisations.
• 1. Eliminate if/else branching, use early termination
• 2. Ambiguous definitions: “is” function prefix clearly returns booleans
• 3. Self-documenting code, avoid belaboured comments
• 4. Consistent formatting, use Eslint + Prettier to automate code style
• 5. DRY (don't repeat yourself), look for opportunities to refactor, make sure to test
• 6. Fail or exit functions fast, related to 1 above
• 7. Avoid magic values, declare and use constants instead
• 8. Avoid violating single responsibility, use pure functions with no side effects
• 10. Premature optimisation

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