G'day all.
Quoting Thomas Davie <[EMAIL PROTECTED]>:
> Essentially I would like some sort of inderritance property for
> Haskell types, I often find myself wanting to for example extend a
> tree with black/white colouring, or later extend the tree with some
> sort of ID, etc.
Have you had a look at these?
http://haskell.org/hawiki?IndirectComposite
http://haskell.org/hawiki?DecoratingStructures
Cheers,
Andrew Bromage
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