From: "Nicolas Pouillard" <nicolas.pouillard@gmail.com>
To: "Pietro Abate" <Pietro.Abate@anu.edu.au>,
"ocaml ml" <caml-list@inria.fr>
Subject: Re: [Caml-list] (old) camlp4 question
Date: Wed, 11 Apr 2007 13:43:48 +0200 [thread overview]
Message-ID: <cd67f63a0704110443l11f977d4ra4b762edf46c1049@mail.gmail.com> (raw)
In-Reply-To: <20070411105949.GA7707@pulp.rsise.anu.edu.au>
On 4/11/07, Pietro Abate <Pietro.Abate@anu.edu.au> wrote:
> Hi all,
> I want to write a type like this in camlp4 :
> type ('a,'b) b = [ `T of 'b ]
> type a = ('b,int) b as 'b
>
> Suppose I have a list of ctyp [<:ctyp< 'b >>;<:ctyp< int >>; ... ]
> How can I write the type ('b,int) b as 'b ??
>
> I've tried with <:ctyp< type a = b ($list:l$) as 'b >> but the result
> is incorrect ... what is the right syntax ?
>
Two things:
The `as' must be surrounded by parentheses (('b,int) b as 'b).
And a type declaration is not a type, you can use a str_item or a sig_item.
Here we go: <:str_item< type a = (b ($list:l$) as 'b) >>;;
--
Nicolas Pouillard
next prev parent reply other threads:[~2007-04-11 11:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-11 10:59 Pietro Abate
2007-04-11 11:43 ` Nicolas Pouillard [this message]
2007-04-12 1:20 ` [Caml-list] " Pietro Abate
2007-04-12 7:06 ` Nicolas Pouillard
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