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/** App.js **/

import { HEROES, COMICS } from './custom/data';
import { shuffle, GAME_STATE } from './custom/utils';

const initialState = {
  // we initialize the state by populating the bench with a shuffled collection of heroes
  bench: shuffle(HEROES),
  [COMICS.DC]: [],
  [COMICS.MARVEL]: [],

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/** custom/data.js **/

export const COMICS = {
  DC: 'dc',
  MARVEL: 'marvel',
};

export const HEROES = [
  {
    name: 'Superman',

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const { runInTransaction } = require('mongoose-transact-utils');
const { User } = require('./models');

async function example() {
  await runInTransaction(async session => {
    // all the query methods listed here - https://mongoosejs.com/docs/queries.html
    // session works with query methods as follows -
    const user = await User.findOne({ }).session(session);
    
    // as mentioned earlier, if you use save

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const { runInTransaction } = require('mongoose-transact-utils');
const { User } = require('./models/');

async function someOperationsWithTransaction() {
  let john;
  await runInTransaction(async session => {
    john = await User.findOne({ name: 'John' }).session(session);
    
    // the same session
    console.log(john.$session() === session); // returns true

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async function updateUserAge(userName, session) { 
  // update the user 
}

// SENARIO - 1
// this will throw a WriteConflict error because of Concurrency Lock
await Promise.all([
  runInTransaction(async session => { await updateUserAge('John', session) }),
  runInTransaction(async session => { await updateUserAge('John', session) }),
]);

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const mongoose = require('mongoose');

const personSchema = require('./models/person');
const dogSchema = require('./models/dog');
const catSchema = require('./models/cat');

const models = {
  Person: mongoose.model('Person', personSchema),
  Dog: mongoose.model('Dog', dogSchema),
  Cat: mongoose.model('Cat', catSchema)

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const { runInTransaction } = require('mongoose-transact-utils');

const { User } = require('./models');

// any queries or write you want to do using transaction
(async () => {
  // runInTransction catches any error in the callback to abort the transaction session
  // and then rethrows the error for you to handle the reporting
  await runInTransaction(async session => {
    // run any queries here

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const mongoose = require('mongoose');

// the run-rs command will by default start the replica sets on the following ports
const dbUri = 'mongodb://localhost:27017,localhost:27018,localhost:27019/example';

async function init() {
  // connecting the DB
  await mongoose.connect(dbUri, { replicaSet: 'rs' });

  // a simple mongoose model

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Simple Weather App

This is a simple Weather App.

A Pen by Brandon on CodePen.

License.

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function rate(rating) {
	const submit = document.querySelector(`input[type="submit"]`);
	submit.removeAttribute('onclick');
	if (![0, 1, 2, 3, 4].includes(rating)) {
		console.log("rate(0) for Strongly Agree, rate(1) for Agree, rate(2) for Neutral, rate(4) for Strongly Disagree");
	} else {
		const inputs = [...document.querySelectorAll(`input[type="radio"]`)];
		const ratings = inputs.filter( x => x.id.endsWith(`Rating_${rating}`) );
		const questions = inputs.filter( x => x.id.includes(`Question`));
		const text = document.querySelector('textarea');