alectrocute / rpn-code-test

CLI RPN Calculator

Prerequisites

• Node >= 12.0
• Browser

Run CLI

cd ./rpn-code-test
node .
> 5 6 9 /
  0.66666

Testing

Run default test with cases listed at gist:

yarn test

Basic API

const rpn = require('./rpn-code-test');
rpn.push(5);
const result = rpn.get();
console.log(result); // 5
rpn.clear();
rpn.push("5 6 9 /");
console.log(rpn.get()); // 0.66

Commentary

• Built a basic CLI implementing an RPN calculator, including optional usage as headless API in Node or in the browser.
• Kept everything as simple and modular as I could.
• If I could do this all again, I'd think about validation more. I wouldn't be surprised if I missed quite a few input scenarios that break this calculator.