[Haskell-cafe] How to implement a digital filter, using Arrows?

John Lask jvlask at hotmail.com
Tue Oct 18 05:35:22 CEST 2011

your function corresponds with Control.Arrow.Transformer.Automaton. If 
you frame your function is such most of your plumbing is taken care of.


On 18/10/2011 1:46 PM, Captain Freako wrote:
> Hi all,
> If I have a pure function, which maps `(input, initialState)' to `(output,
> nextState)', what's the most succinct way of constructing a digital filter
> from this function, using Arrows?
> Thanks,
> -db
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