mnyamor

/*
 - When we use any methods of the fs module we are given the option to use them synchronously or asynchronously.
 - reading files synchronously will block the single Node.js thread so all other connections will wait for this synchronous recal
*/
//include the file system module - we can do just about anything with files and directories

var fs = require('fs'); 

// create var for files .. 
// var files = fs.readdirSync('./lib'); //READ FILES FROM LIBRARY FOLDER..

mnyamor

/*alwaysTalking.js

    var sayings = [
        "You may delay, but time will not.",
        "Tell me and I forget. Teach me and I remember. Involve me and I learn.",
        "It takes many good deeds to build a good reputation, and only one bad one to lose it.",
        "Early to bed and early to rise makes a man healthy, wealthy and wise.",
        "By failing to prepare, you are preparing to fail.",
        "An investment in knowledge pays the best interest.",
        "Well done is better than well said."

mnyamor

/*
  - Node.js comes with a Child Process module which allows you to execute external processes in your environment. 
  - In other words, your Node.js app can run and communicate with other applications on the computer that it is hosting
  - Two main functions used to create Child Processes: spawn and execute
  - 
*/
//The Child Process module contains the execute function
var exec = require("child_process").exec;

//exec('open http'://www.google.com');

mnyamor

var EventEmitter = require('events').EventEmitter;
var util = require('util');

var Person = function(name) {
	this.name = name;
};

util.inherits(Person, EventEmitter);
/* module.exports = Person;  ->  object returned by the require export.
  we could export this, move it to a separate file then require it as a separate module..

mnyamor

var EventEmitter = require('events').EventEmitter;
// We can use the utilities module to help us to have the Person object inherit the EventEmitter
var util = require('util');

/* -create a Person object
   -create a constructor function here for this object
   -in this constructor function, we're going to take in the Person's name
 */
var Person = function(name) {
  // this Person's name will be set to the name value that is passed to this constructor function.

mnyamor

/*The Event Emitter is Node.js's implementation of the pub/sub design pattern.
  It allows us to create listeners for an emit custom Events. 
  In fact, every time we've used that on function to listen for a new Event, 
  we've already been using an implementation of the EventEmitter. 
  */

// create a variable for events and require the events module
var events = require('events');
// create a new instance of a variable called emitter by using the new keyword with the event module, .Event Emitter
// The EventEmitter is a constructor and we create a new instance of the EventEmitter.

mnyamor

/*Readline is a module that allows us to ask questions to our Terminal user.
  The standard input(stdin) and standard output(stdout) objects that allow 
 us to easily control prompting a user with questions and saving those answers.
*/

//create an instance of the readline object which will create the propmt.
var readline = require('readline');
var realPerson = { 
  name: '', 
  saying: []

mnyamor

/*
 Working with Node.js asynchronously through the use of timing functions.
 The timing functions are:- setTimeout, clearTimeout, setInterval, and clearInterval
 - setTimeout will create a delay of a certain time and then invoke a callback function
 - setInterval will not stop, its like a heartbeat
 - clearInterval & clearTimeout will stop intervals or timeouts that are currently running.
*/

var waitTime = 3000; //waitTime is our total time
var currentTime = 0; //currentTime is the amount of time that we've waited

mnyamor

/*
  Working with Node.js asynchronously through the use of timing functions.
  The timing functions are:- setTimeout, clearTimeout, setInterval, and clearInterval
   - setTimeout will create a delay of a certain time and then invoke a callback function
*/
var waitTime = 3000;

console.log("wait for it");

setTimeout(function(){

mnyamor

var questions = [
  "What is your name?", 
  "what is your favourite hobby?", 
  "what is your favourite programming language?"
];

var answers = [];

function askQuestion(i) {