aaronfrost

let add = (x,y)=> x+y;
console.log(add(1,2));
//NO BRACKETS FOR ONE LINES

let add = (x,y)=> {
    if(x && y){
        console.log(x + y);
    }
}
console.log(add(1,2));

aaronfrost

let add = (x,y)=> x+y;
console.log(add(1,2));

//When there is only line instruction
//in the Arrow Function body, you 
//don't need the 'return' keyword 
//to return the result of the expression

aaronfrost

var foo = () => console.log("foo");

// similar to

var bar = function(){
    console.log('bar';
}

aaronfrost

function Aaron(){
    this.favoriteSaying = "I love Google!";
    //this.saySomething = function(){
    //    console.log(this.favoriteSaying);
    //}
    this.saySomething = () => {
    	console.log(this.favoriteSaying);
    }
}

aaronfrost

// Problem with the current way. Closures explode!!!
function Aaron(){
    var me = this; // or that, _this, self, etc
    this.favoriteSaying = "I love Google!";
    this.saySomething = function(){
        console.log(me.favoriteSaying);
    }
}
var a = new Aaron();
a.saySomething();     //logs "I love Google!"

aaronfrost

// Problem with the current way. Closures explode!!!
function Aaron(){
    this.favoriteSaying = "I love Google!";
    this.saySomething = function(){
        console.log(this.favoriteSaying);
    }
}
var a = new Aaron();
a.saySomething();     //logs "I love Google!"

aaronfrost

// 2. Objects
function Foo(){
    this.bar = function(){
    	console.log(this);
    }
    return this;
}
new Foo().bar();   //logs a new Foo object

aaronfrost

// 1. GLOBAL THIS (ie: window object)
console.log(this);
function foo(){
    console.log(this);  //logs the window object
}
foo();

aaronfrost

function foo(){
    var temp = bar();
    return temp;
}

/*
	Is this a tail call? the call to bar is not actually in tail position, however 
	it is the last instruction to 	execute before the return expression. Let me know. 
*/

aaronfrost

var thingsCount = 0;
var   urls = []
	, deferreds = []
;

var mainDeferred = $.Deferred();
deferreds.push(mainDeferred);

$.get('https://www.lds.org/directory/services/ludrs/unit/current-user-units/',function(r){