Hi,
Scala.Rx (for the most part) doesn’t care about threading, i.e. events are
propagated eagerly on the thread where you trigger them.
A guaranteed way to run something on background is to wrap it in a Future
and import e.g. scala.concurrent.ExecutionContext.Implicits.global (works
for me):
Future {
// this will be on background
}
You can use that to trigger event propagation on background. Every FRP
library is probably going to manage threads in its own way. I haven’t used
RxJava (IMHO it’s way too verbose), but Scala.Rx and Scala.frp
(https://github.com/dylemma/scala.frp) AFAIK both just use the calling
thread, so the above applies. RxJava probably uses its own thread pool.
What Macroid provides in this regard is that when you connect reactive
variables/streams to widgets, it ensures that changes to widgets are
applied on the UI thread.
Hope that helps,
Nick
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