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var func = ( x, y ) => x + y;

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var func = ( x, y ) =>

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var func = ( x, y )

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var square = number => number * number;

console.log( square( 5 ) ); // 25

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function Gamer() {
	// 'this' refers to Gamer
	this.playTime = 0;
	
	// We use an ES6 arrow function
	setInterval(() => {
		// So 'this' still refers to the Gamer object
		this.playTime++;
		// Correctly outputs and incremented value representing play time in seconds
		console.log( this.playTime ); 

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function Gamer() {
	// Store value of this in a variable
	var self = this; // Some people use that or _this
	self.playTime = 0;
	
	// trackPlayTime() will now correctly auto increment every second
	setInterval( function trackPlayTime() {
		// Because we're using a variable we don't have to worry about the dynamic value of this in the new function scope
		self.playTime++;
		// Correctly out

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function Gamer() {
	// 'this' refers to Gamer
	this.playTime = 0;
	
	// We think trackPlayTime() will update a gamer's playtime every second
	setInterval( function trackPlayTime() {
		// But we're wrong because trackPlayTime() creates it's own version of 'this'
		this.playTime++;
		// Outputs NaN, because this.playTime was never cast as an integer in this scope
		console.log( this.playTime ); 

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// Multiple statements
([param] [,param]) => {
	statements
}

// Single expression
param => expression

/* _____ Examples _____ */

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$ ignore osx,windows,linux,sublimetext,eclipse,node,grunt,bower,sass,jetbrains > .gitignore

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$ ignore list