From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Mike Gran Newsgroups: gmane.lisp.guile.user Subject: Re: Guile-GI: : Setting parameter type to None or NULL Date: Sun, 25 Apr 2021 13:44:59 -0700 Message-ID: <20210425204459.GA2644511@spikycactus.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="542"; mail-complaints-to="usenet@ciao.gmane.io" Cc: "guile-user@gnu.org" To: Luis Felipe Original-X-From: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Sun Apr 25 22:45:21 2021 Return-path: Envelope-to: guile-user@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lald3-000AXE-KB for guile-user@m.gmane-mx.org; Sun, 25 Apr 2021 22:45:21 +0200 Original-Received: from localhost ([::1]:47544 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lald2-00044z-Iy for guile-user@m.gmane-mx.org; 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Sun, 25 Apr 2021 20:45:06 +0000 Original-Received: by kubenode565.mail-prod1.omega.gq1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID e7c77a49acff8dc253660f330b1ccd36; Sun, 25 Apr 2021 20:45:01 +0000 (UTC) Content-Disposition: inline In-Reply-To: X-Mailer: WebService/1.1.18138 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Apache-HttpAsyncClient/4.1.4 (Java/16) Received-SPF: pass client-ip=74.6.130.122; envelope-from=spk121@yahoo.com; helo=sonic316-12.consmr.mail.bf2.yahoo.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guile-user-bounces+guile-user=m.gmane-mx.org@gnu.org Original-Sender: "guile-user" Xref: news.gmane.io gmane.lisp.guile.user:17458 Archived-At: On Sun, Apr 25, 2021 at 07:36:04PM +0000, Luis Felipe wrote: > Hello again, >=20 > I want to add actions to an application but I can't seem to find the corr= ect value to indicate that no parameter should be passed to a handler. >=20 > In Python, for example, I do this: >=20 > action =3D Gio.SimpleAction.new("about", None) The guile-gi equivalent would be (set! action (simple-action:new "about")) or (set! action (simple-action:new "about" #f)) >=20 > In Guile, I'm doing it like this for now: >=20 > (let [(action (make ??GSimpleAction?? #:name "about")) > ...] >=20 > ...) >=20 > But what I need to indicate is: >=20 > (make ??GSimpleAction?? #:name "about" #:parameter-type None) >=20 > So what's the equivalent to None in Guile? In this form, you'd do the following. Leaving out the #:parameter-type =66rom the constructor sets it to to its default of what Python would call None. (make #:name "about") Regards, Mike >=20 >=20 > Any help is very welcome, >=20 >=20 > --- > Luis Felipe L??pez Acevedo > https://luis-felipe.gitlab.io/ >=20