Rx

Ripped a standalone version of @Quenty’s Rx module out of Nevermore. Looks very very promising.

Interfacing with Fusion’s Value objects is really easy:

function Rxf.value(value: Fusion.Value): Rx.Observer
	return Rx.observer(function(sub: Rx.Subscriber): Maid.Task
		local conn = Fusion.Observer(value):onChange(function()
			sub:Fire(value:get())
		end)
		sub:Fire(value:get())
		return conn
	end)
end

How’s performance? I’ve been looking to write a version of what you’re writing here for a while, but query performance seems scary.

Using RxInstanceUtils for now, but this is looking a lot cleaner.

— @Quenty, 7:13 PM · Oct 17, 2022

I haven’t deliberately optimized anything, but it’s not the worst. I might be comfortable with one query that updates every frame, for example. It’s a mess, but you can play with it here.

hey wait a minute, arent you not a fan of observing any kind of behavior on instances that enter the data model?

— @Kampfkarren, 7:14 PM · Oct 17, 2022

That’s right. Which is why Rx is great, because it simplifies a bunch of boilerplate that would otherwise be need to ensure that an observation is correct.