From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: caml-list@sympa.inria.fr Delivered-To: caml-list@sympa.inria.fr Received: from mail3-relais-sop.national.inria.fr (mail3-relais-sop.national.inria.fr [192.134.164.104]) by sympa.inria.fr (Postfix) with ESMTPS id AAE657EEFA for ; Fri, 13 Nov 2015 13:49:17 +0100 (CET) IronPort-PHdr: 9a23:WJ7DdRaxXuyZ5Zbh8h+T7Oz/LSx+4OfEezUN459isYplN5qZpcq4bnLW6fgltlLVR4KTs6sC0LqL9f25EjBYqb+681k8M7V0HycfjssXmwFySOWkMmbcaMDQUiohAc5ZX0Vk9XzoeWJcGcL5ekGA6ibqtW1aJBzzOEJPK/jvHcaK1oLsh730psSYP10ArQH+SI0xBS3+lR/WuMgSjNkqAYcK4TyNnEF1ff9Lz3hjP1OZkkW0zM6x+Jl+73YY4Kp5pIYTGZn9Kq8xSLgQES8rKXt9sMbisB2GSQqU+lMdVH8Xm1xGGV6Wwgv9W8LasjH7rfZ6wCmtHVP5QKp8DT+i9aZwVBjwiGEHMDM2/Xv/ltE1hq9BpBOn4RByld2HKLqJPeZzK/uONegRQnBMC55c Authentication-Results: mail3-smtp-sop.national.inria.fr; spf=None smtp.pra=christoph.hoeger@tu-berlin.de; spf=None smtp.mailfrom=christoph.hoeger@tu-berlin.de; spf=None smtp.helo=postmaster@mail.tu-berlin.de Received-SPF: None (mail3-smtp-sop.national.inria.fr: no sender authenticity information available from domain of christoph.hoeger@tu-berlin.de) identity=pra; client-ip=130.149.7.33; receiver=mail3-smtp-sop.national.inria.fr; envelope-from="christoph.hoeger@tu-berlin.de"; x-sender="christoph.hoeger@tu-berlin.de"; x-conformance=sidf_compatible Received-SPF: None (mail3-smtp-sop.national.inria.fr: no sender authenticity information available from domain of christoph.hoeger@tu-berlin.de) identity=mailfrom; client-ip=130.149.7.33; receiver=mail3-smtp-sop.national.inria.fr; envelope-from="christoph.hoeger@tu-berlin.de"; x-sender="christoph.hoeger@tu-berlin.de"; x-conformance=sidf_compatible Received-SPF: None (mail3-smtp-sop.national.inria.fr: no sender authenticity information available from domain of postmaster@mail.tu-berlin.de) identity=helo; client-ip=130.149.7.33; receiver=mail3-smtp-sop.national.inria.fr; envelope-from="christoph.hoeger@tu-berlin.de"; x-sender="postmaster@mail.tu-berlin.de"; x-conformance=sidf_compatible X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A0B5AACn2kVWnCEHlYJehH3ANYdXPBABAQEBAQEBARABAQEBAQgLCQkhLoItgjEPAUU2AgUWCwILAwIBAgFLDQYCAQGIKgSgL49wkQSBAZJGgUQFlkh8lUSTLDiBdQELAVCBXnGFPQEBAQ X-IPAS-Result: A0B5AACn2kVWnCEHlYJehH3ANYdXPBABAQEBAQEBARABAQEBAQgLCQkhLoItgjEPAUU2AgUWCwILAwIBAgFLDQYCAQGIKgSgL49wkQSBAZJGgUQFlkh8lUSTLDiBdQELAVCBXnGFPQEBAQ X-IronPort-AV: E=Sophos;i="5.20,287,1444687200"; d="scan'208";a="153720204" Received: from mail.tu-berlin.de ([130.149.7.33]) by mail3-smtp-sop.national.inria.fr with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Nov 2015 13:49:16 +0100 X-tubIT-Incoming-IP: 91.65.128.77 Received: from ip5b41804d.dynamic.kabel-deutschland.de ([91.65.128.77] helo=[192.168.178.42]) by mail.tu-berlin.de (exim-4.76/mailfrontend-6) with esmtpsa [UNKNOWN:AES128-SHA:128] for id 1ZxDmz-0007M0-5i; Fri, 13 Nov 2015 13:49:15 +0100 To: caml users From: =?UTF-8?Q?Christoph_H=c3=b6ger?= Organization: =?UTF-8?Q?Technische_Universit=c3=a4t_Berlin?= Message-ID: <5645DC49.7050106@tu-berlin.de> Date: Fri, 13 Nov 2015 13:49:13 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.11.13.123916 X-PMX-Spam: Gauge=IIIIIII, Probability=0%, Report='' Subject: [Caml-list] Cyclic type abbreviation Dear all, why is this type cyclic? type node = int * tree * tree and tree = node option I cannot introduce a manifest for the option type, as there is no Option module (why is that, btw?) - so I would assume option to be special enough to be handled like any other algebraic data type. -- Christoph Höger Technische Universität Berlin Fakultät IV - Elektrotechnik und Informatik Übersetzerbau und Programmiersprachen Sekr. TEL12-2, Ernst-Reuter-Platz 7, 10587 Berlin Tel.: +49 (30) 314-24890 E-Mail: christoph.hoeger@tu-berlin.de