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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: Sat, 4 Dec 2010 22:00:26 +0100	[thread overview]
Message-ID: <AANLkTimRki9EfbN0ekQQA2RmaQ2u28pHuvy37-eLhtxq@mail.gmail.com> (raw)
In-Reply-To: <AANLkTin9Bdea8CZjx3OR1NsFFawSu7G8KGD_ZiTvGr1S@mail.gmail.com>

On Sat, Dec 4, 2010 at 9:54 PM, Jacques Le Normand <rathereasy@gmail.com> wrote:
> you may want to name your type parameters because you can mix GADT
> constructors with normal constructors. consider:
>
> type 'a term =
>     | Ignore of 'a term : int term
>     | Embed of 'a
>
> I don't think propagating type parameters is a good idea. The current
> rule is: ignore type parameters in GADT constructors. This is simpler
> than unifying the type parameters with the arguments of the return
> type of the constructor.

But it expands to:

> type 'a term =
>     | Ignore of 'a term : int term
>     | Embed of 'a : 'a term


  reply	other threads:[~2010-12-04 21:00 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 [this message]
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
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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