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calc.js

AI is reading

1function calc(a, b, c, d) {
2  const x = a * b;
3  const y = c + d;
4  return x - y;
5}

Variable names a, b, c, d don't convey intent.

→ This connects to a classic theme: naming as documentation.

Classic · Naming

188lessons

15–20 min each, taught through your own code

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Code quality, design principles, security... Experience professional engineering concepts through your own code.

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“

Programs must be written for people to read, and only incidentally for machines to execute.

— From a programming classic

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STEP 3

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CodeSensei — Code Quality Lv.1 — Naming Things

Concept: Clear naming

Variable and function names are your code's documentation. Instead of vague names like tmp or data, choose names that instantly convey what the variable represents.

Found in your code:

function calc(a, b, c, d) {
  const x = a * b;
  const y = c + d;
  return x - y;
}

This function uses names like calc, a, b, c, d, x, y. Rewriting it as calcShippingCost(weight, distance, fuelRate, tollFee) makes the purpose clear just by reading the code.

I see — the argument names alone can tell the whole story

Common questions

Frequently asked questions

Is it free to use?

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Code is only sent temporarily during AI analysis and is never stored in our database. Anthropic does not use commercial API customer data for model training.

What programming languages are supported?

TypeScript, JavaScript, Python, Go, Rust, Java, and all major programming languages are supported.

Can I use it without a GitHub account?

Yes. You can paste code manually to learn. Connecting GitHub makes the experience more seamless.

— Epilogue —

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