On Tue, Mar 29, 2011 at 7:50 AM, John Millikin <[email protected]> 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 > ----------------------------------------------------------------------
The operators sound good to me. My only request would be to put in a usage example in the documentation. I'd be happy to write one if you'd like. Personally, I think that =$ will *greatly* clean up my code. Michael _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
