Nested modules with equal types

Nested modules with equal types

[Dennis Walter]

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!

Re: [Caml-list] Nested modules with equal types

[Goswin von Brederlow]

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