[Haskell-cafe] Polymorphic variants

Jon Harrop jon at ffconsultancy.com
Thu Aug 2 13:32:33 EDT 2007

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

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