From: Lukasz Stafiniak <lukstafi@gmail.com>
To: Jacques Le Normand <rathereasy@gmail.com>
Cc: caml-list caml-list <caml-list@yquem.inria.fr>
Subject: Re: [Caml-list] GADT constructor syntax
Date: Sun, 5 Dec 2010 09:25:35 +0100 [thread overview]
Message-ID: <AANLkTi=uB6NJ94yK63iDHopzCsbd_byvb2WKPM5KvvvU@mail.gmail.com> (raw)
In-Reply-To: <AANLkTinVSDB-XWXKvJPxDzhzxox-Vmxnw9Lw2ucLy0De@mail.gmail.com>
On Sun, Dec 5, 2010 at 9:10 AM, Lukasz Stafiniak <lukstafi@gmail.com> wrote:
>
> shouldn't mean that Embed is "basically" Embed of int : int term. My
> position is that if a type variable should be treated as local to a
> branch, it should be explicitly quantified (using the dot notation,
> for example "Ignore of 'a. 'a : int term", without any exceptions to
> "existential" variables). And that the patterns
>
> type X =
> | Branch of Y
>
> and
>
> type X =
> | Branch of Y : X
>
> should be equivalent (where X could for example be 'a term).
To clarify again: modulo variable capture! That is, the pattern
> type X =
> | Branch of 'a. Y : X
will be different (unless 'a is not used in Y nor X).
next prev parent reply other threads:[~2010-12-05 8:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-04 19:25 Jacques Le Normand
2010-12-04 19:36 ` [Caml-list] " gasche
2010-12-04 19:39 ` Basile Starynkevitch
2010-12-04 19:41 ` Lukasz Stafiniak
2010-12-04 20:14 ` Jacques Le Normand
2010-12-04 20:22 ` Lukasz Stafiniak
2010-12-04 20:54 ` Jacques Le Normand
2010-12-04 21:00 ` Lukasz Stafiniak
2010-12-04 21:06 ` Jacques Le Normand
2010-12-05 8:10 ` Lukasz Stafiniak
2010-12-05 8:16 ` Lukasz Stafiniak
2010-12-05 8:25 ` Lukasz Stafiniak [this message]
2010-12-05 8:35 ` bluestorm
2010-12-06 0:21 ` Jacques Garrigue
[not found] <1245532236.1431213.1291490707868.JavaMail.root@zmbs3.inria.fr>
2010-12-06 9:11 ` Daniel de Rauglaudre
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