Is it possible to use Observable<Double>.interval in RxSwift?
<p>Hi I have a question here, all the docs I found on RxSwift so far are using observable interval as below:</p>

<pre><code>let subscription = Observable&lt;Int&gt;.interval(0.3, scheduler: scheduler)
    .subscribe { event in
        print(event)
    }

NSThread.sleepForTimeInterval(2)

subscription.dispose()
</code></pre>

<p>Now I have the need to implement a <code>Observable&lt;Double&gt;.interval</code> timer, I would like to a Double value in my subscribeNext calls from Observable.</p>

<p>After change above code to <code>Double</code> as a testing, I have an error saying <code>Type Observable&lt;Double&gt; has no member IntegerLiteralType</code> , anyone knows how to implement this in RxSwift?</p>