I was playing with some of Oleg's code (at end for convenience). After
minor adjustments for ghc 6.10.1, it still didn't work. The error
message is quite puzzling too, as it suggests adding exactly the
constraint which is present... Any ideas?
Jacques
-- Oleg's definition of a vector
{-# LANGUAGE ScopedTypeVariables #-}
without, the 'f's in the instance are independent.
Claus
- Original Message -
From: Jacques Carette care...@mcmaster.ca
To: haskell-cafe@haskell.org
Sent: Thursday, April 02, 2009 10:15 PM
Subject: [Haskell-cafe] Issue with IsFunction/Vspace in GHC
Claus Reinke wrote:
{-# LANGUAGE ScopedTypeVariables #-}
without, the 'f's in the instance are independent.
Claus
Thanks - I discovered this (by trial-and-error) at about the same time
you sent the email.
Is there a ticket somewhere to add a warning about this? I expected me
'f's to be the