[Haskell-cafe] type/class question: toString
graham.fawcett at gmail.com
Tue Nov 6 14:02:11 EST 2007
On Nov 6, 2007 12:15 PM, David Benbennick <dbenbenn at gmail.com> wrote:
> In ghc 6.8.1, the error messages are more helpful:
> Illegal instance declaration for `MyShow String'
> (All instance types must be of the form (T t1 ... tn)
> where T is not a synonym.
> Use -XTypeSynonymInstances if you want to disable this.)
> In the instance declaration for `MyShow String'
Thanks for the tip. I might give 6.8.1 a try; I still cannot get it to
work in 6.6.1. The problem may exist between the keyboard and the
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