[Haskell] functional dependencies not satisfactory?

Stefan O'Rear stefanor at cox.net
Tue Sep 4 17:24:05 EDT 2007

On Tue, Sep 04, 2007 at 11:11:00PM +0200, Wolfgang Jeltsch wrote:
> Am Dienstag, 4. September 2007 22:00 schrieben Sie:
> > […]
> > It should be emphasized that this program worked the very first time I
> > typed it in.
> Which version of GHC are you using?  I’m a bit confused since the latest 
> successful nightly build for i386-unknown-linux seems to be from August 20.  
> Are type families already implemented in this version?  Was there any change 
> in type family support since then?

Type synonym families were only merged on the 28th IIRC.

stefan at stefans:~$ ghci -V
The Glorious Glasgow Haskell Compilation System, version 6.7.20070829

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