Sara3

  Fetcher interface:
  fetchAnimals(prefix: string, callback: function): void
  fetchArticles(prefix: string, callback: function): void
  fetchFruits(prefix: string, callback: function): void
  Note: there are many more fetchers
 
  Callback interface:
  callback(results: string[]): void
*/
fetchAnimals('g', (results) => console.log(results));

Sara3

/*
 *  HW 2 - Recursion
 */

 'use strict';

/*
 *  Problem:  Powerset
 *
 *  Prompt:   Given a set S, return the powerset P(S), which is

Sara3

Sara3

Sara3

//array of two objects [{name, time}, {name, time}, {name, time}]


//# pageViews=> how many times a page is viewed 
//# of users => have many different users have used the web
//# sessions => how many have viewed the page with half an hour time break in between
function main(){
	//example array 
	var pageView = [{'name':'Sara', 'time': 1}, {'name': 'John', 'time':2},{'name':'Sara', 'time': 1}, {'name': 'Hadis', 'time':2},{'name':'Sara', 'time': 1}, {'name': 'Hadis', 'time':33}]
	// var pageView = [{name: 'sara', 'time': 1}]

Sara3

//array of two objects [{name, time}, {name, time}, {name, time}]


//# pageViews=> how many times a page is viewed 
//# of users => have many different users have used the web
//# sessions => how many have viewed the page with half an hour time break in between
function main(){
	//example array 
	//var pageView = [{'name':'Sara', 'time': 1}, {'name': 'John', 'time':2},{'name':'Sara', 'time': 1}, {'name': 'Hadis', 'time':2},{'name':'Sara', 'time': 1}, {'name': 'Hadis', 'time':33}]
	var pageView = [{name: 'sara', 'time': 1}]

Sara3

/*
  Install mysql  -> https://dev.mysql.com/doc/mysql-osx-excerpt/5.5/en/osx-installation-pkg.html
  run the server 
  log in with 'root' user
  log in with  mysql -u root -p;

  create a super user like (https://dev.mysql.com/doc/refman/5.5/en/adding-users.html)
  in another termilal log in with the user info. 'sara'
  mysql -u sara -p;
  

Sara3

var messageBus = {

    subscrib: function(str, callback) {
        // make a key in the parent object 
        if (!this[str]) {
            this[str] = [];
            this[str].push(callback)
        } else {
            this[str].push(callback)
        }

Sara3

/**
 * @param {number[]} nums
 * @return {number[]}
 */
var productExceptSelf = function(nums) {
    //i: array
    let output = []
    //need to handle division by 0 [1, 0] => [0, 1]
    // need to handle division by -number  [9,0,-2] => [0,-18,0]
    //

Sara3

class CashAmount{
    constructor(amount) {
        this.amount = amount;
        this.pennies = this.amount * 100; 
    }
   
    addDoubleAmount (newAdd) {
        this.amount += newAdd;
        this.pennies += newAdd*100;
    }