asynquence: async perpetual batch-iteration of a list of numbers

gistfile1.js

var isq = ASQ.iterable();
var numbers = [];

// generate some numbers to iterate on
for (var i=0; i<5000; i++) {
	numbers.push(Math.random());
}

// ######################

// set up a "perpetually extending iteration" loop for `numbers`
isq.then(function iteration(idx){
	// more items to iterate on?
	if (idx < numbers.length - 1) {
		// extend the iterable-sequence to handle the next item
		isq.then(iteration);
	}
	return numbers[idx];
});

// async batch loop
(function batch(idx){

	for (var count = 0, ret;
		// keep going while the iterable-sequence isn't yet "done"
		// and while the batch-count is under 1000
		(ret = isq.next(idx)) && !ret.done && count < 1000;
		count++, idx++
	) {
		// print out the most recent item from the list
		console.log(ret.value);
	}

	// more to iterate on?
	if (!ret.done) {
		// yield for 500ms, then continue w/ next batch
		setTimeout(function(){ batch(idx) },500);
	}
	else {
		console.log("===== all numbers displayed =====");
	}

})(0);