8 Jan
2012
8 Jan
'12
3:55 p.m.
On Sun, Jan 8, 2012 at 9:25 PM, Brent Yorgey
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/MultiParamTypeClassesDile... does not sound "uncontroversial" to me. That's why I avoided them so far. - Chris