On Friday, 2003-02-07, 12:31, CET, Arjan van IJzendoorn wrote:
>[...]
> Yes, that does mean adding type classes, but not the whole machinery. If we
> support Eq, Ord, Show and Num with a limited number of instances, chapters 1
> to 11 of Hudak's book can be used without modification.

I just have had a look at Helium and think that at least a deriving mechanism 
is absolutely needed. The need to write down obvious implementations for 
equality is very disturbing, IMHO. Furthermore, I think, the need to state 
equality functions explicitely as paramters of certain functions makes 
learning harder and not easier.

But it's an interesting project. Keep going on it.

> [...]

Wolfgang
_______________________________________________
Haskell mailing list
[EMAIL PROTECTED]
http://www.haskell.org/mailman/listinfo/haskell

Reply via email to