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Refactor a 600-line function without breaking the three teams that depend on it

Coding Refactoring Advanced 🤖 ChatGPT 👁 4 views

📝 The Prompt

I have a 600-line function that handles order processing. It's been touched by 12 engineers over 4 years. Three downstream teams depend on its current behavior, including edge cases I'm not sure are intentional. Help me refactor it safely. Walk me through: 1. The pre-refactor work — what tests need to exist before I touch a line 2. How to characterize the current behavior (golden master tests, snapshot logging in prod) without shipping new bugs 3. The actual refactor strategy — extract pure functions first, isolate side effects, then split 4. The rollout — feature flags, parallel run, canary, or full cutover I'll paste the function in my next message. Before you read it, give me the playbook so I evaluate the code against the plan, not the plan against the code.

🎯 What this prompt does

This AI prompt helps you refactor a 600-line function without breaking the three teams that depend on it. Designed for refactoring workflows in the coding category, it's a advanced-level prompt you can copy directly into ChatGPT to get instant, production-ready results.

Use it when you need a advanced prompt that produces clear, actionable output without wrestling with trial-and-error wording. Just copy, customize, and run.

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🚀 How to use this prompt

  1. Copy the prompt using the 📋 button above.
  2. Open ChatGPT (or Claude, Gemini, Perplexity, or your preferred LLM).
  3. Paste the prompt into a new chat. Add any extra context about your situation if helpful.
  4. Run the prompt and review the AI's response. Most outputs are usable immediately.
  5. Iterate if needed — if the tone, length, or structure isn't quite right, reply with "make it shorter", "use bullet points", or "make it more formal" and the AI will refine it.

💡 Tips for better results

  • Tailor the prompt to your specific context — the more detail you give, the better the output.
  • If the first output isn't quite right, ask the AI to refine, rewrite, or add more detail — iteration is key.
  • For long outputs, ask for a section at a time (e.g. 'start with the introduction only') to keep quality high.
  • Combine this with other coding prompts to build an end-to-end workflow.
  • Save your favorite variations — small wording tweaks often produce noticeably different results.
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✨ What you'll get

When you run this prompt, expect ChatGPT to return:

  • A directly usable refactoring output tailored to the details you provided
  • Clear structure (headings, bullets, or numbered sections) that you can drop into your workflow
  • Content that matches your specified tone and context
  • Results in under 30 seconds — no manual drafting required

Need a different angle? Just ask follow-up questions. The AI will adjust without you starting over.

🔄 3 variations to try

1

Make it more formal

Add "Use a formal, professional tone suitable for enterprise clients" at the start of the prompt.

2

Ask for multiple options

Append "Give me 5 alternative versions, each with a different angle or approach." after the main instruction.

3

Request structured output

Add "Return the response as a markdown table (or bullet list, or JSON)" so you can paste the result directly into your docs or code.

🏷 Tags

🔎 Find more prompts like this

Browse 233 more coding prompts or search the full library.

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