Resilient Pub/Sub

jQ fns.js

;(function($){
	var cache = {};

	$.pub = function (topic, args) {
		cache[topic] && $.each(cache[topic], function () {
			try {
				this.apply($, args || []);
			} catch (e) {
				if (console) console.warn(e);
			}
		});
	};

	$.sub = function (topic, callback) {
		if(!cache[topic]){
			cache[topic] = [];
		}
		cache[topic].push(callback);
		return [topic, callback];
	};

	$.unsub = function (handle) {
		var t = handle[0];
		cache[t] && $.each(cache[t], function (i) {
			if (this === handle[1]) {
				cache[t].splice(i, 1);
			}
		});
	};

})(jQuery);

usage.js

function callMe () {
	for (var i = 0, l = arguments.length; i < l; i++) {
		console.log(arguments[i]);
	}
	DOES_NOT_EXIST++;
}

function callMe2 () {
	console.log('hi');
	DOES_NOT_EXIST++;
}


$.sub('test', callMe);
var removeMe = $.sub('test', callMe2);

$.pub('test', ['Init: 1']);
$.pub('test', ['Init: 2', 'Init: 3']);

$.unsub(removeMe);

$.pub('test', ['Init: 4', 'Init: 5']);