Implement rate limit

[AlexSenchenko]

Hi @mattpodwysocki !

I have a cold observable with 1000000 items - array, and want to make HTTP calls with rate 10 per sec.

How to achieve this by standard way?

[lukashavrlant]

What about this way? (http://jsfiddle.net/8zk4ovxc/236/)

Rx.Observable.zip(
    Rx.Observable.from("abcdefghijklmopqrstuvwyz"),
    Rx.Observable.interval(100)
)
.subscribe(function([message]) {
    console.log(`${message} ${Date.now()}\n`);
});