On Sun, Jan 8, 2012 at 9:25 PM, Brent Yorgey <byor...@seas.upenn.edu> wrote:
> On Fri, Jan 06, 2012 at 10:51:58AM +0000, Steve Horne wrote: > > > > If I specify both extensions (-XMultiParamTypeClasses and > > -XFlexibleInstances) it seems to work, but needing two language > > extensions is a pretty strong hint that I'm doing it the wrong way. > > Not necessarily. These two extensions in particular (and especially > the second) are quite uncontroversial. > I really don't know much about the subject, but http://hackage.haskell.org/trac/haskell-prime/wiki/MultiParamTypeClassesDilemma does not sound "uncontroversial" to me. That's why I avoided them so far. - Chris
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