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function bar( d ) {
	console.log( "Bar: "+d );
};

function baz( d ) {
	console.log( "Baz: "+d );
};

var pubsub = {

	// Published events and their subscribed functions
	events: {},

	// Add event name to list
	publish: function( eventName ) { 

		this.events[eventName] = [];

		return;

	},

	// Remove event name from list
	unpublish: function( eventName ) {

		delete this.events[eventName];

		return;

	},

	// Subscribe function to event
	subscribe: function( eventName , callbackfunction ) { 

		this.events[eventName].push( callbackfunction );

		return;

	},

	// Remove function from event
	unsubscribe: function( eventName , callbackfunction ) {

		this.events[eventName].splice( this.events[eventName].indexOf( callbackfunction ) , 1 );

		return;

	},

	// Initiate event
	emit: function( eventName , data ) {

		if( this.events[eventName] ) {

			this.events[eventName].forEach(function(fn){

				fn(data);

			});

		} else {

			console.error("Event \""+eventName+"\" has not beed published");
		}

	}

};

// Publish an event
pubsub.publish( "foo" );

// Subscribe functions to event
pubsub.subscribe( "foo" , bar );
pubsub.subscribe( "foo" , baz );

console.log( pubsub.events );

// Init event and send data
pubsub.emit( "foo" , 5 );

/* 

	pubsub.unsubscribe( "foo" , bar );

	pubsub.emit( "foo" , 5 );

	pubsub.unpublish( "foo" );
	
	console.log( pubsub.events );

*/