Hi,
thanks for your remarks.
@Timothy: Yes, looks like I mis-understand the main motivation for
core.async or I'm just not used to see my programs as an assembly like
sending data boxes around ;-)
On Tuesday, September 3, 2013 4:20:19 PM UTC+2, David Nolen wrote:
>
> Which also creates a resource problem as a result of the subscription side
> effect. You can build subscription based on Rx over core.async if you like,
> but I think it's more of a tradeoff than people realize.
>
Correct, the producer can easily outrun the consumer in Rx ... appears to
be somewhat similar to holding the head space-leaks in lazy sequences, but
probably much more subtle to detect and fix.
>
> Problematic in what real sense? Haskell provides similar facilities over
> the Chan data type. Clearly they also believe it's useful to model problems
> in this way.
>
>
As far as I know, Haskell has Chan data types in its concurrency
extensions, but I have never seen them in FRP. Maybe this means that FRP is
addressing a different problem. On the other hand, the Automaton Arrow can
be used to implement state machines that transition on receiving inputs in
a composable and referentially transparent way ... but they still have some
problems regarding efficiency and space-leaks.
I was just wondering, how core.async relates to FRP and like that the
latter allows for equational reasoning about your data flow. In the end,
side-effects have to occur somewhere since callbacks/event handlers/etc.
can never return values, so FRP has to deal with similar problems
(currently it looks like the higher abstraction provides less control about
resources).
Best,
Nils
> David
>
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