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const euclideanDistance = (a, b) =>Math.hypot(...Object.keys(a).map(k => b[k] - a[k]));euclideanDistance([1, 1], [2, 3]); // ~2.2361euclideanDistance([1, 1, 1], [2, 3, 2]); // ~2.4495
const Discord = require('discord.js');const client = new Discord.Client();const token = 'YOUR_BOT_TOKEN';// When the bot is ready, log a message to the consoleclient.on('ready', () => {console.log(`Logged in as ${client.user.tag}!`);});// When a user sends a message, check if they are authenticatedclient.on('message', async (msg) => {if (!msg.author.bot && !msg.author.authenticated) {const filter = (m) => m.author.id === msg.author.id;const collector = msg.channel.createMessageCollector(filter, { time: 15000 });// Send an authentication message to the usermsg.author.send('Please authenticate yourself by clicking this link: ' + generateAuthURL(msg.author.id));collector.on('collect', async (m) => {// Check if the message contains the authentication codeif (m.content.startsWith('!auth ')) {const code = m.content.slice(6);const { access_token } = await getAccessToken(code);// Set the user's authenticated status and access tokenmsg.author.authenticated = true;msg.author.access_token = access_token;collector.stop();}});collector.on('end', () => {if (!msg.author.authenticated) {msg.author.send('Authentication timed out.');}});}});// Generate an authentication URL for the userfunction generateAuthURL(userId) {const redirectURI = encodeURIComponent('YOUR_REDIRECT_URL');const scopes = 'identify';const clientID = 'YOUR_CLIENT_ID';return `https://discord.com/api/oauth2/authorize?client_id=${clientID}&redirect_uri=${redirectURI}&response_type=code&scope=${scopes}&state=${userId}`;}// Exchange the authorization code for an access tokenasync function getAccessToken(code) {const redirectURI = encodeURIComponent('YOUR_REDIRECT_URL');const clientID = 'YOUR_CLIENT_ID';const clientSecret = 'YOUR_CLIENT_SECRET';const res = await fetch('https://discord.com/api/oauth2/token', {method: 'POST',headers: {'Content-Type': 'application/x-www-form-urlencoded',},body: `grant_type=authorization_code&code=${code}&redirect_uri=${redirectURI}&client_id=${clientID}&client_secret=${clientSecret}`,});return await res.json();}client.login(token);
// Get the text that the user has selectedconst getSelectedText = () => window.getSelection().toString();getSelectedText();
class SequentialQueue{ //if you want it to go backwards, too badnext(){return this.i++;}constructor(start = 0){this.i = start;}}const que = new SequentialQueue(0);for(let i = 0; i < 10; i++){console.log(que.next());}
const head = arr => (arr && arr.length ? arr[0] : undefined);head([1, 2, 3]); // 1head([]); // undefinedhead(null); // undefinedhead(undefined); // undefined
router.post("/", async (req, res) => {const { email, password } = req.body;try {if (!email) return res.status(400).json({ msg: "An email is required" });if (!password)return res.status(400).json({ msg: "A password is required" });const user = await User.findOne({ email }).select("_id password");if (!user) return res.status(400).json({ msg: "Invalid credentials" });const match = await bcrypt.compare(password, user.password);if (!match) return res.status(400).json({ msg: "Invalid credentials" });const accessToken = genAccessToken({ id: user._id });const refreshToken = genRefreshToken({ id: user._id });res.cookie("token", refreshToken, {expires: new Date(Date.now() + 604800),httpOnly: true,});res.json({ accessToken });} catch (err) {console.log(err.message);res.status(500).json({ msg: "Error logging in user" });}});