How AI Solves the Tasks Developers Hate
"Code tells you How, comments tell you Why."
There isn't a developer alive who doesn't know this quote. But what is the reality? We are busy chasing deadlines and implementing features; spending time making the README.md look pretty or updating API specifications feels like a luxury. Eventually, the "me" of six months later looks at the code the "me" of the past wrote and tears their hair out, asking, "What on earth is this logic?"
Documentation is "the task we hate the most, but the investment with the highest ROI." Fortunately, AI happens to be incredibly good at this tedious work.
In Part 6, we will introduce methods to hire AI as your 'Technical Writer' and 'Personal Tutor' to resolve developer burnout and shorten the learning curve.
1. README.md: Managing Your Project's First Impression
If you enter a GitHub repository and the README.md is empty or just says "test," that project loses credibility immediately. However, figuring out the project structure, writing installation instructions, and worrying about screenshot placement is annoying.
Just throw the Project Structure at the AI. It will fill in the rest.
📝 High-Quality README Generation Prompt
Role: You are a professional Technical Writer managing an open-source project.
When you ask like this, the AI infers the tech stack from dependency packages, analyzes the file structure to explain the role of each folder, and creates a perfect document.
2. API Documentation: Liberation from Excel Hell
One of the things backend developers hate the most is keeping API specifications (Swagger/OpenAPI) up to date. Changing the code but not the documentation leads to fights with frontend developers—a common story, right?
Now, copy the code and throw it at the AI.
"This is the Express.js router code. Analyze this code and write the specification in Swagger (OpenAPI 3.0) YAML format. You must include examples for the Request Body and examples for 200, 400, and 500 Responses."
The AI reads the code's validation logic, accurately identifies required parameters and potential errors, and documents them.
3. Commenting: Preventing "Why did I write this?"
Complex algorithms or Regular Expressions require explanation. But writing comments is work, too.
Ask the AI to "Explain the intent of the code."
💡 Automated JSDoc/Docstring Generation
"Add JSDoc style comments to this function. Specify the types for parameters and return values, and explain the core logic inside the function (especially the part using reduce) line by line."
Comments written by AI drastically reduce the time it takes for others (or future you) to understand the code.
4. Learning & Migration: "How do I write this in Python?"
Development is a career of lifelong learning. Sometimes you have to analyze legacy code in a language you don't know, or migrate a Java project to Kotlin.
AI is a Polyglot Tutor fluent in every programming language in the world.
🔄 Code Migration Prompt
Role: You are a Senior Developer fluent in both Java and Python.
👶 ELI5 (Explain Like I'm 5)
When you encounter obscure code you just can't understand, ask like this:
"Explain what this code does using an analogy that even a 5-year-old could understand."
The AI might compare complex asynchronous logic to "ordering food delivery" or memory management to "organizing toys," aiding your understanding.
Conclusion: Documentation is a Letter to Your Future Self
Documentation is for others, but in reality, it is a task to save your future self. Because the "me" three months from now will absolutely not remember today's logic.
Using AI reduces the time spent on documentation to 1/10th while doubling the quality.
The excuse "I don't have time to write docs" no longer works. You have a capable assistant named AI waiting for you.
[Next Step]
We have now completed the entire process with AI: Planning, Implementation, Testing, and Documentation. Is AI truly a perfect partner? In the final Part 7, we will wrap up the series by discussing how not to be fooled by AI's Hallucinations (plausible lies) and the developer's last line of defense to prevent security incidents.