Hello Asynchronous World

[Aaron Novstrup]

I was able to get this code running in the Hello World sample.  For now, the RPC is faked with a Timer that executes continuations off a queue every 3 seconds, but this is definite progress.  The state of the label goes from "Loading..." to "Hello ... World!" to (after about 3 seconds), "Hello Asynchronous World!".

val f = new Label("Loading...")

RootPanel.get().add(b);

RootPanel.get().add(f);

import Async._

val service = new SomeService

asynchronously {

   val response = service.callAsyncMethod

   f.setText("Hello " + response + " World!");

}

f.setText("Hello ... World!")

[Rob Heittman]

:: applause ::

I have been too buried with work to weigh in, but I do just want to say that I really like this approach! I agree with your general observation that it's not really about creating a synchronous RPC system, but rather about providing a choice for more straightforward code and better readability in certain (very common) cases. I bet many developers will find this style very easy to read and reason about. I certainly do.