function any(promises) {
    if (promises.length === 0) {
        return Q.resolve();
    }

    var deferred = Q.defer();
    var pendingCount = 0;
    array_reduce(promises, function (prev, current, index) {
        var promise = promises[index];

        pendingCount++;

        when(promise, onFulfilled, onRejected, onProgress);
        function onFulfilled(result) {
            deferred.resolve(result);
        }
        function onRejected() {
            pendingCount--;
            if (pendingCount === 0) {
                deferred.reject(new Error(
                    "Can't get fulfillment value from any promise, all " +
                    "promises were rejected."
                ));
            }
        }
        function onProgress(progress) {
            deferred.notify({
                index: index,
                value: progress
            });
        }
    }, undefined);

    return deferred.promise;
}
Attaches a listener that can respond to progress notifications from a
promise's originating deferred. This listener receives the exact arguments
passed to ``deferred.notify``.
@param {Any*} promise for something
@param {Function} callback to receive any progress notifications
@returns the given promise, unchanged