From: Julien Signoles <Julien.Signoles@lri.fr>
To: Ralph Douglass <ralph@grayskies.net>
Cc: Caml List <caml-list@inria.fr>
Subject: Re: [Caml-list] unused variable error with objects
Date: Thu, 20 Mar 2008 14:57:44 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.63.0803201457090.25531@serveur9-10.lri.fr> (raw)
In-Reply-To: <71767b800803200640i291c837fkb7d36e06f1415ea9@mail.gmail.com>
> With labeled functions, I usually do something like ~snoo:_, but it does not
> work in this exampled with methods:
> ---
> class foo = object
> method bar ~(snoo : string):_ = ()
> end;;
>
> let biff = new foo;;
> biff#bar ~snoo:"hi";;
> --
> ocamlc -c -w Ae -warn-error Ae foo.ml
> File "foo.ml", line 2, characters 15-19:
> Warning Z: unused variable snoo.
>
> On a whim, I did the following, which surprisingly worked:
>
> class foo = object
> method bar ~(_snoo : string) = ()
> end;;
>
> let biff = new foo;;
> biff#bar ~_snoo:"hi";;
>
> And that compiles, which confused me. But I have to put the underbar into
> the method call, which seems wrong.
> Is there a solution to this?
Try this:
class foo = object
method bar ~snoo:(_:string) = ()
end;;
(new foo)#bar ~snoo:"hi";;
--
Julien
next prev parent reply other threads:[~2008-03-20 13:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-20 13:40 Ralph Douglass
2008-03-20 13:57 ` Julien Signoles [this message]
2008-03-20 13:58 ` [Caml-list] " Jeremy Yallop
2008-03-20 15:42 ` Ralph Douglass
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