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import React from "react";
import { useState, useEffect } from "react";

const render = data => match =>
  data.pending ? match.pending()
  : data.error ? match.error(data.error)
  : data.data  ? match.data(data.data)
  : null // prettier-ignore

export const useMatchFetch = url => {

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// referency https://www.interviewcake.com/concept/javascript/memoization

class Fibber {
  constructor() {
    this.memo = {};
  }

  fib(n) {
    if (n < 0) {
      throw new Error('Index was negative. No such thing as a negative index in a series.');

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// Run asynchronous functions in sequence

const peopleArr  = [
    {
        username:    'glestrade',
        displayname: 'Inspector Lestrade',
        email:       '[email protected]',
        authHash:    'bdbf9920f42242defd9a7f76451f4f1d',
        lastSeen:    '2019-05-13T11:07:22+00:00',
    },

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const Logger = require('./logger');

const logger = new Logger();

logger.on('message', data => console.log('Called Listener', data));

logger.log('Hello World');
logger.log('Hi');
logger.log('Hello');

marekdano

<!-- The issue: alert displays 'undefined' instead of an item from prizes -->
<button id="btn-0">Button 1</button>
<button id="btn-1">Button 2</button>
<button id="btn-2">Button 3</button>

<script type="text/javascript">
  const prizes = ['A Unicorn!', 'A Hug!', 'Fresh Laundry!'];
  for (var btnNum = 0; btnNum < prizes.length; btnNum++) {

    // For each of our buttons, when the user clicks it...

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function deepClone(obj) {
  var copy;

  // Handle the 3 simple types, and null or undefined
  if (null == obj || "object" != typeof obj) return obj;

  // Handle Date
  if (obj instanceof Date) {
    copy = new Date();
    copy.setTime(obj.getTime());

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/**
   * Function finds the node you are searching for and expand it and its parent.
   *
	 * @param {TreeNode} node primeng tree node data
	 * @param {string} propField name of the property you are searching for ex: label
	 * @param {any} searchValue value you are searching for
	 */
	filterExpandRecursive(
		node: TreeNode,
		propField: string,

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const flatten = filter => {
    const filters = filter.filters;
    if (filters) {
        return filters.reduce((acc, curr) => acc.concat(curr.filters ? flatten(curr) : [curr]), []);
    }
    return [];
};

const rootFilters = {
  filters: [

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// reference https://medium.com/javascript-scene/master-the-javascript-interview-what-is-function-composition-20dfb109a1a0

const pipe = (...fns) => x => fns.reduce((v, f) => f(v), x);

const fn1 = s => s.toLowerCase();
const fn2 = s => s.split('').reverse().join('');
const fn3 = s => s + '!'

const newFunc = pipe(fn1, fn2, fn3);
const result = newFunc('Time'); // emit!

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var vendingMachine = require('./vendingMachine');

vendingMachine.insertCoin('q');
vendingMachine.insertCoin('q');
vendingMachine.insertCoin('q');
vendingMachine.insertCoin('q');
console.log("Insert 100");
console.log("Get product: ", vendingMachine.vendProduct('A1'));
console.log("Release: ", vendingMachine.releaseChange());