> If you really, really wanted to define Show [ShipInfo], then putting
>
> {-# LANGUAGE FlexibleInstances, OverlappingInstances #-}
>
> at the beginning of your file would work. At the cost of using
> overlapping instances, of course.
And at the cost of causing code like this:
> f :: Show a => [a] -> String
> f xs = show xs
to fail to compile (see "Incoherent Instances").
Implement "showList"; it's the Right Answer for this case.
_______________________________________________
Haskell-Cafe mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/haskell-cafe
