From: Alain Frisch <frisch@clipper.ens.fr>
To: Patrick M Doane <patrick@watson.org>
Cc: <caml-list@inria.fr>
Subject: Re: [Caml-list] New polymorphic variant syntax
Date: Wed, 21 Nov 2001 20:06:22 +0100 (MET) [thread overview]
Message-ID: <Pine.GSO.4.33.0111212004190.9989-100000@clipper.ens.fr> (raw)
In-Reply-To: <20011121122117.A10520-100000@fledge.watson.org>
On Wed, 21 Nov 2001, Patrick M Doane wrote:
> Having abbreviations like 'inline' works really well. I'm curious to know
> if there is a good way to represent the following information:
>
> <!ELEMENT FORM - - (%flow;)+ -(FORM)>
>
> This states that a FORM element can have any flow object except for FORM
> (i.e. nesting is not allowed).
>
> How difficult would it be to extend the polymorphic variant syntax to list
> tags that should not be included in the conjuction? Perhaps this already
> possible? Of course we can always revert to simply listing the variants.
The type [> `Form of t] where t is an abstract type, for instance
should be ok for this, no ?
--
Alain
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next prev parent reply other threads:[~2001-11-21 19:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-11-21 17:46 Patrick M Doane
2001-11-21 19:06 ` Alain Frisch [this message]
2001-11-21 19:16 ` Patrick M Doane
2001-11-24 5:21 ` Mike Leary
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