mgtitimoli

function isPromise(thing) {

    return (
        typeof thing === "object" && thing !== null
        && thing.then instanceof Function
        && thing.catch instanceof Function
    );
}

function whileGenerates(gen, prevGenResult) {

mgtitimoli

// wrapping into IIAFE to set strict mode,
// since otherwise chrome does not allow you to use let/const
(() => {
    "use strict"; 
    let delay = (fn, ms) => (...args) => new Promise(resolve => setTimeout(() => resolve(fn(...args)), ms));

    console.time("test");
    // Test:
    // we are delaying 5000 ms an arrow function that returns an array
    // with "Hello" concatenated with the given args, in this case "world"

mgtitimoli

// I'm using an IIFE since currently chrome console doesn't allow you to specify let statements in sloppy mode
(function test() {
    "use strict";
    let obj = { key1: "value1", key2: "value2" };
    let swapped = Object
        .keys(obj)
        .reduce((res, key) => (res[obj[key]] = key, res), {});
    console.log(swapped);
})();

mgtitimoli

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

mgtitimoli

"use strict";

function parallel(tasks, ...args) {

    let error;
    let results = [];

    for (let curTask of tasks) {
        try {
            results.push(curTask(...args));

mgtitimoli

"use strict";

function toPromise(fn, ...args) {

    // if fn throws an exception, this will reject
    // the promise with what has been thrown
    return new Promise(function(resolve) {

        resolve(fn(...args));
    });

mgtitimoli

"use strict";

function serial(tasks, ...args) {

    let results = [];

    let lastPromise = tasks.reduce(function(prevPromise, curTask) {

        return prevPromise.then(function(prevResult) {

mgtitimoli

"use strict";

function serial(tasks, ...args) {

    let results = [];
    let prevPromise = Promise.resolve();

    for (let curTask of tasks) {
        prevPromise = prevPromise.then(function(prevResult) {

mgtitimoli

"use strict";

function isThenable(something) {

    return (
        typeof something === "object"
        && something.then instanceof Function
    );
}