[Haskell-cafe] Polymorphic variants

[Jon Harrop]

On Thursday 26 July 2007 00:07:23 Josef Svenningsson wrote:
> On 7/26/07, Jon Harrop <jon at ffconsultancy.com> wrote:
> > Does Haskell have anything similar to OCaml's polymorphic variants?
>
> No as such, but it's possible to simulate them. As always Oleg was the
> one to demonstrate how:
> http://okmij.org/ftp/Haskell/generics.html

Thank you.

Is there any interest in adding polymorphic variants to Haskell? I think it is 
fair to say that OCaml has shown them to be an extremely useful construct 
(more common than objects in OCaml, for example).

-- 
Dr Jon D Harrop, Flying Frog Consultancy Ltd.
OCaml for Scientists
http://www.ffconsultancy.com/products/ocaml_for_scientists/?e