Thanks. Then it's a bug in Hugs98 that show over (->) is still predefined
in Haskell98 mode. This inconsistency is unfortunate for people who use GHC
and Hugs on the same code,.
- Conal
-----Original Message-----
From: Sigbjorn Finne (Intl Vendor)
Sent: Wednesday, June 02, 1999 11:50 PM
To: Conal Elliott
Cc: 'Oege de Moor'; 'ghc-bugs'
Subject: RE: Show and function types in 4.03
Show over (->) is no longer Haskell(98). You need
to define your own, if you need it.
--sigbjorn
> Conal Elliott [mailto:[EMAIL PROTECTED]] writes:
>
>
> Did something change in 4.03 w.r.t. Show and functions? Mag
stopped
> compiling:
>
> ghc-4.03 -c -O2 -fvia-C -O2-for-C -H20M UU_Pretty.hs
>
> UU_Pretty.hs:9:
> No instance for `Show (Int -> String -> String)'
> When deriving classes for `Format'
>
> Here's the code:
>
> data Format = Elem { height :: Int
> , last_w :: Int
> , total_w :: Int
> , txtstr :: Int -> String ->
String
> }
> deriving Show
>
> - Conal
>
