On Tue, 4 Feb 2003, Xavier Leroy wrote:

> > Do OCaml support similar type?
>
> Not in the core language, but you can achieve similar effect with functors:
>
> module M(A: sig type 'a agregat end) =
>   struct
>     type refal_atom =
>       Char of char
>     | Int of int
>     | Term of refal_atom A.agregat
>   end
>
> Hope this answers your question,
Thank you! It's what I wanted.
>
> - Xavier Leroy

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