gistfile1.js

function main3(scope) {
	return function (data) {
		scope.log(data.length);
	};
}

function main2(scope) {
	return function (data) {
		var innerPromise = $.get("http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.js");
		innerPromise.then(main3(scope));
		return innerPromise;
	};
}

function main() {
	var	scope = console,
		promise = $.get("http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js");
	
	promise.then(main2(scope));
	return promise;
}

function nestedMain() {
	var promise = $.get("http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js");

	promise.then(function (data) {
		var innerPromise = $.get("http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.js");
		innerPromise.then(function (data) {
			console.log(data.length);
		});
		return innerPromise;
	});

	return promise;
}


function realMain2(data, nestedData) {
	console.log(_.isEqual(data.length,nestedData.length));
}

function realMain(dataPromise,nestedDataPromise) {
	$.when(dataPromise, nestedDataPromise).done(realMain2);
}

$.when(main(),nestedMain()).done(realMain);

var actors = (function() {
	function send(actor, signal, args) {
		return actor.apply(null, [signal].concat(args));
	};

	function actor(table) {
        var executor = function (signal) {
            var slot = table[signal] || function() {
                    throw "No slot available for signal: "+signal;
                }

            return slot.apply(null, [executor].concat(_.rest(_.toArray(arguments))));
        };
        return executor;
    };

	return {
		send: send,
		actor: actor
	};
})();

var actorMain = actors.actor({
	"start": function (self) {
		$.when(main(), nestedMain()).done(function () {
			actors.send(self, "level1", _.toArray(arguments));
		});
	},
	"level1": function (self, mainPromise, nestedMainPromise) {
		$.when(mainPromise, nestedMainPromise).done(function () {
			actors.send(self, "finished", _.toArray(arguments));
		});
	},
	"finished": function (self, mainResult, nestedResult) {
		console.log(_.isEqual(mainResult.length, nestedResult.length));
	}
});

actors.send(actorMain, "start");