Re: 2.01: fromEnum & toEnum missing when deriving instances

[Simon L Peyton Jones]

This is a bug in the deriving code... Haskell 1.3 added a method
and we didn't derive code for it!

I'm fixing it in my copy so it'll appear in the next release, which I'm now
planning.

Simon

| From: Magnus Carlsson <[EMAIL PROTECTED]>
| Date: Fri, 25 Oct 1996 00:27:21 +0200 (MET DST)
| Compiling and running the program
| 
|   data X = X1 | X2 | X3 deriving (Eq,Ord,Enum,Show)
| 
|   main = print (fromEnum X1)
| 
| gives the output
| 
|   Fail: noDefaultMethodError:Prelude.Enum.fromEnum"
| 
| /Magnus