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Nested modules with equal types
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Date: -- (:)
From: Goswin von Brederlow <goswin-v-b@w...>
Subject: Re: [Caml-list] Nested modules with equal types
Dennis Walter <dennis.walter@gmail.com> writes:

> Hi,
>
> is there a way in OCaml to define nested modules where a type t of the
> inner module is defined as equal to the out type of the same name?
>
> For example, I would like to define a file outer.ml containing
>
> type t
> module Inner :
> sig
>   type t = t
> end
>
> but I get the error
> Error: The type abbreviation t is cyclic
> which kind of makes sense. Can I somehow refer to Outer.t in the Inner
> module? (Outer.t does in fact not work either).
>
> Thanks!

type t
module Inner =
struct
  type tmp = t
  type t = tmp
end

MfG
        Goswin