On Mon, Apr 28, 2008 at 10:50 PM, Brandon S. Allbery KF8NH <allbery@ece.cmu.edu> wrote:

The format is instance [context =>] classname instance.
Your classname is ValueClass.
Your instance is a. a is not of the form (T a1 ... an).

But neither is
instance (Show a) => Show [a] ...

*sound of penny dropping *

Ah. Wood, trees, all that.

Thanks!

cheers,
Fraser.