const getSubsets = arr => arr.reduce((prev, curr) => prev.concat(prev.map(k => k.concat(curr))), [[]]);

// Examples
getSubsets([1, 2]);     // [[], [1], [2], [1, 2]]
getSubsets([1, 2, 3]);  // [[], [1], [2], [1, 2], [3], [1, 3], [2, 3], [1, 2, 3]]

const gcd = (...arr) => {
  const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
  return [...arr].reduce((a, b) => _gcd(a, b));
};

gcd(8, 36); // 4
gcd(...[12, 8, 32]); // 4

import React, { useState, useEffect } from 'react';
import Link from 'next/link';

export default function CookieBanner() {
    // Initialize with a default value (false if not previously set in localStorage)
  const [cookieConsent, setCookieConsent] = useState(() =>
    localStorage.getItem('cookieConsent') === 'true' ? true : false
  );

  useEffect(() => {
    const newCookieConsent = cookieConsent ? 'granted' : 'denied';

    window.gtag('consent', 'update', {
      analytics_storage: newCookieConsent
    });

    localStorage.setItem('cookieConsent', String(cookieConsent));
  }, [cookieConsent]);

  return !cookieConsent && (
    <div>
    <div>
        <p>
        We use cookies to enhance the user experience.{' '}
        <Link href='/privacy/'>View privacy policy</Link>
        </p>
    </div>
    <div>
        <button type="button" onClick={() => setCookieConsent(false)}>Decline</button>
        <button type="button" onClick={() => setCookieConsent(true)}>Allow</button>
    </div>
    </div>
  )
}

const express = require('express')
const app = express()
const port = 3000

app.get('/', (req, res) => {
  res.send('Hello World!')
})

app.listen(port, () => {
  console.log(`Example app listening on port ${port}`)
})

# Acronyms

## Computer Numerical Control (CNC)

- Typicalldfdfsdffdafdasgfdgfgfdfdafdasfdafda

import React, { useState } from 'react' import Welcome from '../components/Welcome'  function About() {  	const [showWelcome, setShowWelcome] = useState(false)  	return ( 	<div> 	{showWelcome ? <Welcome /> : null} 	</div> 	<div> 	{showWelcome && <Welcome /> } 	</div> 	) }  export default App