On Wed, Oct 21, 2009 at 12:02 AM, Michael Snoyman <mich...@snoyman.com> wrote: > On Tue, Oct 20, 2009 at 5:17 PM, Nicolas Pouillard > <nicolas.pouill...@gmail.com> wrote: >> >> On Tue, Oct 20, 2009 at 3:12 PM, Michael Snoyman <mich...@snoyman.com> >> wrote: >> > >> > >> > On Tue, Oct 20, 2009 at 11:04 AM, Nicolas Pouillard >> > <nicolas.pouill...@gmail.com> wrote: >> >> >> >> On Sun, Oct 18, 2009 at 9:45 PM, Michael Snoyman <mich...@snoyman.com> >> >> wrote: >> >> > While working on the next release of data-object, I wanted to >> >> > represent >> >> [...] >> >> >> About the name Attempt, I think that 'Outcome' would be a better name. >> > >> > The problem with a name like "Outcome" is that it doesn't really imply >> > the >> > possibility of failure, simply that we are wrapping of the result for >> > some >> > reason. >> >> I don't see why, the outcome of an action could be either a success or >> a failure. >> Even if the only *desired* outcome is success. > > I think I'm going to stick with Attempt. The only other point that came to > me is it's nicer to have a function called "attempt" than "outcome" IMO.
OK [...] >> fromAttempt :: (forall e. Exception e -> a) -> Attempt a -> a >> fromAttempt f a = attempt f id a > > And of course I now realize this name will conflict with the FromAttempt > typeclass ;). I think we'll be safe leaving this function out, considering > how trivial it is to implement in terms of attempt. :) BTW, fromAttempt instance can be nicely expressed using the 'attempt' function. > Also, I've added a monad transformer to the github repo. I've tried it out > in some local code I have, and it *really* cleans up the error handling. Having the monad transformer too is great. The only minor disadvantage is to make a choice between mtl and transformers. But transformers is slowly replacing mtl so no big deal. -- Nicolas Pouillard http://nicolaspouillard.fr _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe