toddzebert

// requires https://gist.github.com/toddzebert/135578e9faf006b73656c360b7e616e2
// requires https://gist.github.com/toddzebert/c9d75cd901897e7363bf142a90a2b2a1
// requires https://gist.github.com/toddzebert/bcd849a48676256eef8a795f8f03cfff
// requires https://gist.github.com/toddzebert/43c308b0e0f559b47ac487dcc8c06924
// requires https://gist.github.com/toddzebert/5d279f8a2104bef103273e5177ae3599
var data = { id: 4 };
getAuth(data)
  .then(getProfile)
  .then(getFeed)
  .then(getPosts)

toddzebert

// requires https://gist.github.com/toddzebert/996e297c1c081d19378eaf5f29dc75bb
// requires https://gist.github.com/toddzebert/ec087188b813e6490abab2cf0feb2ad5
var getAds = function (data) {
  return new Promise( (resolve, reject) => {
    Promise.race([getAd(data), getAd(data), getAd(data)])
      .then(result => {
        data.ads = result; resolve(data);
      })
      .catch(result => {
        data.ads = result; reject(data);

toddzebert

// requires https://gist.github.com/toddzebert/996e297c1c081d19378eaf5f29dc75bb
var getAd = (function (dat) {
  let i = 1;
  // create a closure
  const ad = function () {
    return 'Ad#' + i++;
  };
  return function (dat) {
    return simAsync(ad);
  };

toddzebert

// requires https://gist.github.com/toddzebert/996e297c1c081d19378eaf5f29dc75bb
// requires https://gist.github.com/toddzebert/9dc7de3ed0195dfefcc533bcba426930
var getPosts = function (data) {
  return new Promise( (resolve, reject) => {
    const getAllPosts = data.feed.map(post => getPost(post));
    Promise.all(getAllPosts)
      .then(result => {
        data.posts = result; resolve(data);
      })
      .catch(result => {

toddzebert

// requires https://gist.github.com/toddzebert/996e297c1c081d19378eaf5f29dc75bb
var getPost = function (data) {
  // create a closure
  const post = function () {
    return data + 100;
  };
  return simAsync(post);
};

toddzebert

// requires https://gist.github.com/toddzebert/996e297c1c081d19378eaf5f29dc75bb
var getFeed = function(data) {
  // create a closure
  const feed = function () {
    const a = [];
    for (let i = randInt(4, 2); i; i--) {
      a.push(randInt(90, 1));
    }
    data.feed = a;
    return data;

toddzebert

// requires https://gist.github.com/toddzebert/996e297c1c081d19378eaf5f29dc75bb
var getProfile = function(data) {
  // create a closure
  const prof = function () {
    data.profile = "Profile"; return data;
  };
  return simAsync(prof);
};

toddzebert

// requires https://gist.github.com/toddzebert/996e297c1c081d19378eaf5f29dc75bb
var getAuth = function(data) {
  // create a closure
  const auth = function () {
    data.auth = "Authorized"; return data;
  };
  return simAsync(auth);
};

toddzebert

// requires https://gist.github.com/toddzebert/b4465de41b0f8d317d7a685604983c36
var simAsync = function(fulfillment, rejection) {
  return new Promise( (resolve, reject) => {
    const delay = randInt(400, 200);
    setTimeout(() => { resolve(fulfillment()); }, delay);
  });
};

toddzebert

An Iterable is an object that has a method Symbol.iterator which is factory for Iterators. Native Iterables include which include Arrays, Stings, Set & Map (but not weak variants).

An Iterator includes a "pointer" for traversing an Iterable in the form of a next method.