[Haskell-cafe] understanding enumerator/iteratee
schlepptop at henning-thielemann.de
Tue Dec 23 22:32:15 EST 2008
Jason Dusek schrieb:
> Henning Thielemann <schlepptop at henning-thielemann.de> wrote:
>> Jason Dusek schrieb:
>>> I'm taking a stab at composable streams, starting with
>>> cursors. I managed to make a derived cursor today -- as I
>>> work through this stuff, I hope to understand
>>> Iteratee/Enumerator better.
>> How about a wiki page on the roles of enumerators and
>> iteratees, best explained using a simple example?
> At present, I am not totally convinced of Iteratee/Enumerator.
> Why aren't there any functor instances anywhere? Why do
> filestreams and lists present distinct interfaces? A stream
> computation is a stream computation; the effect of pulling an
> item off the stream and handling it is sequenced in these
> computations so it seems like a monad transformer is in order.
> So I am just going to keep trying until I can make that
I have put essentially Oleg's explanation to the Wiki:
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