Hello John,
Sorry that I'm late. And honestly one day for request submissions is a
bit narrow.
I have a request, too: Right now it is difficult to compose
enumeratees. An equivalent of (.) for enumeratees would be great. So
instead of:
joinI $ e1 $$ joinI $ e2 $$ iter
one could write
let e = e1 .= e2 in e =$ iter
I would appreciate a 0.4.10 with such a composition operator.
Greets,
Ertugrul
John Millikin <jmilli...@gmail.com> wrote:
> Since the release, a couple people have sent in feature requests, so I'm
> going to put out 0.4.9 in a day or so.
>
> New features will be:
>
> - tryIO: runs an IO computation, and converts any exceptions into
> ``throwError`` calls (requested by Kazu Yamamoto)
>
> - checkContinue: encapsulates a common pattern (loop (Continue k) = ...)
> when defining enumerators
>
> - mapAccum and mapAccum: sort of like map and mapM, except the step function
> is stateful (requested by Long Huynh Huu)
>
> Anyone else out there sitting on a request? Please send them in -- I am
> always happy to receive them, even if they must be declined.
>
> ---
>
> Also, I would like to do a quick poll regarding operators.
>
> 1. It has been requested that I add operator aliases for joinI and joinE.
>
> 2. There have been complaints that the library defines too many operators
> (currently, 5).
>
> Do any existing enumerator users, or anyone for that matter, have an opinion
> either way?
>
> The proposed operators are:
>
> ----------------------------------------------------------------------
> infixr 0 =$
> infixr 0 $=
>
> (=$) :: Monad m => Enumeratee ao ai m b -> Iteratee ai m b -> Iteratee ao m
> b
> enum =$ iter = joinI (enum $$ iter)
>
> ($=) :: Monad m => Enumerator ao m (Step ai m b) -> Enumeratee ao ai m b ->
> Enumerator ai m b
> ($=) = joinE
> ----------------------------------------------------------------------
>
>
--
nightmare = unsafePerformIO (getWrongWife >>= sex)
http://ertes.de/
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