From: Leo White <lpw25@cam.ac.uk>
To: Philippe Veber <philippe.veber@gmail.com>
Cc: caml users <caml-list@inria.fr>
Subject: Re: [Caml-list] Typing of a parameterized class where the type parameter is the type of self.
Date: Thu, 30 Oct 2014 16:07:13 +0000 [thread overview]
Message-ID: <86egtp7d8u.fsf@cam.ac.uk> (raw)
In-Reply-To: <CAOOOohTMm5srD1JuPUsaMvyG5z1m_mpQeZZYQRpx0bvH+DLZbA@mail.gmail.com> (Philippe Veber's message of "Thu, 30 Oct 2014 17:00:19 +0100")
> This was an easy way to say that the polymorphism of m was not captured by 'a. I don't want to abuse your time, but if
> you have a tiny example illustrating when this automatic promotion is indeed useful, I'd be curious to see it. In any
> case, many thanks for the fix, which I'll use right away.
I think that the automatic promotion is just for convenience to avoid
writing "'a . ..." on lots of methods. Your example should probably be
considered a bug since the promotion should really only happen when the
method type is genuinely polymorphic, but I don't know how easy it is to
fix.
Regards,
Leo
next prev parent reply other threads:[~2014-10-30 16:07 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-30 14:51 Philippe Veber
2014-10-30 15:19 ` Leo White
2014-10-30 16:00 ` Philippe Veber
2014-10-30 16:07 ` Leo White [this message]
2014-10-30 16:13 ` Philippe Veber
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