[Haskell-cafe] Is this functional reactive programming

Jake McArthur jake.mcarthur at gmail.com
Tue May 12 11:26:16 UTC 2015

This looks more like self-adjusting computation than functional reactive
programming. There's a lot of good literature on this topic that's pretty
easy to find on Google. Hope this helps!

On 8:36PM, Sun, May 10, 2015 Clinton Mead <clintonmead at gmail.com> wrote:

> What I want to be able to do is something like this:
> do
> x <- newSTRef 2
> y <- newSTRef 3
> z <- letSTRef (x + y)
> r1 <- readSTRef z
> writeSTRef x 5
> r2 <- readSTRef z
> return (r1, r2)
> This should return (6,15)
> The "letSTRef" is what's new. The value it returns can change based on the
> parts that make up it's function changing.
> I understand this syntax above isn't going to work (I'd have to use
> applicative at least I'd imagine) but my main question is that does
> something like this exist? Is it functional reactive programming or is it
> something else?
> I don't want to be reinventing the wheel if this type of idea is already
> implemented but I haven't recognised it.
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