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From: Matej Kosik <5764c029b688c1c0d24a2e97cd764f@gmail.com>
To: caml-list <caml-list@inria.fr>
Subject: [Caml-list] Error: This variant or record definition does not match that of type ... Their kinds differ.
Date: Thu, 17 Aug 2017 15:55:18 +0200	[thread overview]
Message-ID: <2389e7d7-5590-22d6-3322-605d9a5b20c3@gmail.com> (raw)

Hi,

If my "b.mli" file contains the following code:

(*1*)  module rec A :
(*2*)  sig
(*3*)    type t = T1
(*4*)  end
(*5*)
(*6*)  and B :
(*7*)  sig
(*8*)    type t = A.t = T1
(*9*)  end

and I try to compile it like this:

  ocamlc -c b.ml

then I get the following error:

  File "b.mli", line 8, characters 9-26:
  Error: This variant or record definition does not match that of type A.t
         Their kinds differ.

I am wondering what does this error message mean?
What is the kind of A.t?
What is the kind of B.t?
Why are the kinds of of B.t and A.t different?

             reply	other threads:[~2017-08-17 13:50 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-17 13:55 Matej Kosik [this message]
2017-08-17 13:58 ` Matej Kosik

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