[Haskell-cafe] Polymorphic (typeclass) values in a list?
tjay.dreaming at gmail.com
Tue Oct 23 01:54:48 EDT 2007
On 10/22/07, Tim Docker <timd at macquarie.com.au> wrote:
> You may then like to add a type class to turn things into renderables:
> class IsRenderable where
> toRenderable :: a -> Renderable
> instance IsRendeable Point where ...
> instance IsRenderable Line where ...
Cool. I should get more familiar with basic Haskell98 before I decide
on using GHC extensions...
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