[if this thread has to keep running, could you please drop me of the cc?
and how did it manage to end up on haskell@ - that is the wrong list ]
In that case, though, would you happen to know which
value in the registry would allow me to override
HOMEPATH for GHCi?
if you go to the beginning of
>
> instance Show WeekDay where
> (empty)
You see, an empty instance like that may serve various purposes. In
type-level programming, for example, they (roughly) correspond to facts in
logic programming. However, in the case at hand, this is what happens: the
doc for class Show reads thus:
"Mini
Dear all
A student from a beginners course on Functional Programming came to me with
a problem, he declared a type like:
data WeekDay = Mon | Tue | Fri -- ...
He had forgot to complete a Show instance definition.
instance Show WeekDay where
(empty)
Then he complained about getting *** Excepti
