YozhEzhi

var arr = [
  [10, 10, 10, 20, 60],
  [10, 10, 50, 10, 10],
  [20, 10, 30, 20, 10]
];

var dest = arr.reduce((acc, cur) =>
  acc.map((el, i) => Math.max(el, cur[i]))
);

YozhEzhi

/**
 * A collection of helper prototype for everyday DOM traversal, manipulation,
 * and event binding. Sort of a minimalist jQuery, mainly for demonstration 
 * purposes. MIT @ m3g4p0p
 */
window.$ = (function (undefined) {

  /**
   * Duration constants
   * @type {Object}

YozhEzhi

const Subject = function() {
  let observers = [];

  return {
    subscribeObserver(observer) {
      observers.push(observer);
    },
    unsubscribeObserver(observer) {
      const index = observers.indexOf(observer);
      if(index > -1) {

YozhEzhi

/**
 * Helper function to swap items in array
 */
function swap(arr, firstIndex, secondIndex) {
  const temp = arr[firstIndex];
  arr[firstIndex] = arr[secondIndex];
  arr[secondIndex] = temp;
}

/**

YozhEzhi

const arr = [34, 203, 3, 746, 200, 984, 198, 764, 9];
 
const merge = (xs, ys) => {
  if (xs.length === 0) return ys;
  if (ys.length === 0) return xs;
  const x = xs[0];
  const y = ys[0];

  return (x < y)
     ? [x, ...merge(xs.slice(1), ys)]

YozhEzhi

var events = (function(){
  var topics = {};
  var hOP = topics.hasOwnProperty;

  return {
    subscribe: function(topic, listener) {
      // Create the topic's object if not yet created
      if(!hOP.call(topics, topic)) topics[topic] = [];

      // Add the listener to queue

YozhEzhi

const pipeline = (seed, ...fns) => fns.reduce((val, fn) => fn(val), seed);

console.log(pipeline()); // undefined
console.log(pipeline(42)); // 42
console.log(pipeline(42, n => n*2, n => -n)); // -84

YozhEzhi

const compose = (...fns) =>
  (seed) =>
    fns.reduceRight((val, fn) => fn(val), seed);

const greet = name => `Hi, ${name}`;
const exclaim = statement => `${statement.toUpperCase()}!`;
const welcome = compose(greet, exclaim);

console.log(welcome('Yozh')); // 'Hi, YOZH!'

YozhEzhi

const peopleFactory = function(name, age, sex) {
  return {
    name,
    age,
    sex,
  };
};

const human01 = peopleFactory('Alex', 28, 'male');

YozhEzhi

window.onload = function() {
  paintPonit(document.body, 'click', function(event) {
    if (event.target.nodeName === 'I') {
      event.target.className = 'clicked';
    }
  });

  function paintPonit(obj, eventName, handler) {
    const handlerWrapper = event => handler.call(obj, event);
    obj.addEventListener(eventName, handlerWrapper, false);