relaxing instance declarations

Edward Kmett ekmett at
Sun Apr 28 18:06:07 CEST 2013

You can always put those helper functions in the class and then just not
export them from the module.

On Sun, Apr 28, 2013 at 10:49 AM, Doug McIlroy <doug at>wrote:

> Is there any strong reason why the where clause in an instance
> declaration cannot declare anything other than class
> operators? If not, I suggest relaxing the restriction.
> It is not unusual for declarations of class operators to
> refer to special auxiliary functions. Under current rules
> such functions have to be declared outside the scope in
> which they are used.
> Doug McIlroy
> _______________________________________________
> Haskell-prime mailing list
> Haskell-prime at
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