Handling the results of multiple async ops with JS.

gistfile1.js

var promises = [
	async1(),
	async2(),
	…
	asyncN()
];
/* jQuery: warning, won't swallow exceptions */
	var deferred = $.Deferred();
	$.when.apply($, promises)
		.done(function () { deferred.resolve(promises); })
		.fail(function () { deferred.reject(promises); });
	return deferred.promise();

/* Q: Promises/A+ compliant, plus more */
	/* will resolve with an array of all values
		or reject on first failure */
	var all = Q.all(promises);

	/* or, to wait for all to finish: */
	var handleResults = function (results) {
		results.forEach(function (result) {
			if (result.state === "fulfilled") {
				var value = result.value;
			} else {
				var reason = result.reason;
			}
		});
	};
	Q.allSettled(promises).then(handleResults);

/* Note that with solely a spec-compliant Promise, you'd have to write the code to aggregate with arrays yourself. Luckily, there's libraries to do that for you! */

Yeah, maybe I'm weird, but I see about the same amount of complexity each way.

I'll keep thinking about it.