nem035

function eventLoop() {
  // perform loop ticks, "forever"
  while (true) {
    var tastQueue = selectTaskQueue();
    var nextTask = taskQueue.getNextTask();
    nextTask();
  }
}

nem035

function getThing(arg) {
  return getStuff(arg)
    .then(getMoreStuff)
    .then(getThatFinalThing);
}

nem035

function getThing(arg) {
  return new Promise(function(resolve, reject) {
    getStuff(arg)
      .then(function(stuff) {
        getMoreStuff(stuff)
          .then(function(moreStuff) {
            getThatFinalThing(moreStuff)
              .then(resolve, reject)
          }, reject)
      }, reject)

nem035

promise
  .then(
    function(){
      throw Error('example')
    },
    function () {
      console.log('This will not be called');
    }
  )
  .catch(function (err) {

nem035

var promise1 = httpGetPromise(url1);
var promise2 = httpGetPromise(url2);
var promise3 = httpGetPromise(url3);

promise1
  .then(function (result1) {
    processValue(result1);
  })
  .then(function () {
    return promise2;

nem035

function* gen(s) {
  console.log(s);
  console.log('yield 1 - ' +  (yield 'A'));
  console.log('yield 2 - ' +  (yield 'B'));
  console.log('end');
  return 'C';
}
var iter = gen(0);

console.log(iter.next('a'));

nem035

function* gen() {
  yield 'pause here';
  return 'I am done';
}

// Calling the generator function returns an iterator.
var iter = gen();

// Calling .next() on an iterator returns an object with a value and a done flag
iter.next(); // { value: any, done: boolean }

nem035

function getThing(arg, callback){
  getStuff(arg, function(err, stuff) {
    if (err) {
      callback(err);
    } else {
      getMoreStuff(stuff, function(err, moreStuff) {
        if (err) {
          callback(err);
        } else {
          getThatFinalThing(moreStuff, function(err, thing) {

nem035

function getJSON(url) {
  return httpGetPromise(url)
    .then(JSON.parse);
}

nem035

var promise = new Promise(function(resolve, reject) {
  undefined.method(); // we cause an exception
});

promise
  .then(
    function() {
      // not called
    },
    function(err) {