From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Neil Jerram Newsgroups: gmane.lisp.guile.user Subject: Re: A couple of questions about goops method parameters Date: Sun, 07 Sep 2014 11:33:25 +0100 Message-ID: <8761gzen4a.fsf@ossau.homelinux.net> References: <1409905923.9245.5.camel@Renee-desktop.suse> <871trpridm.fsf@izanagi.i-did-not-set--mail-host-address--so-tickle-me> <87ppf9g76m.fsf@taylan.uni.cx> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1410086061 10187 80.91.229.3 (7 Sep 2014 10:34:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 7 Sep 2014 10:34:21 +0000 (UTC) Cc: Carlos Pita , David Thompson , "guile-user@gnu.org" To: Taylan Ulrich Bayirli/Kammer Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Sun Sep 07 12:34:15 2014 Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XQZnT-0007F6-Bv for guile-user@m.gmane.org; Sun, 07 Sep 2014 12:34:15 +0200 Original-Received: from localhost ([::1]:37788 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XQZnS-00078B-W3 for guile-user@m.gmane.org; Sun, 07 Sep 2014 06:34:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39567) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XQZnD-00070v-TP for guile-user@gnu.org; Sun, 07 Sep 2014 06:34:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XQZn6-0001eq-D6 for guile-user@gnu.org; Sun, 07 Sep 2014 06:33:59 -0400 Original-Received: from out1.ip06ir2.opaltelecom.net ([62.24.128.242]:36900) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XQZn6-0001eT-8E for guile-user@gnu.org; Sun, 07 Sep 2014 06:33:52 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AtMKAGQ0DFQCYLpkPGdsb2JhbABZgw1kAUXRNgEHexcFAQEBATg3hAQBBAFWIwULCAMhJQ8BBA0YChoTiC4DCQy1Vw2GWgEXjSCBVVgHLoQeBZpighCOc4obPC+BBoFJAQEB X-IPAS-Result: AtMKAGQ0DFQCYLpkPGdsb2JhbABZgw1kAUXRNgEHexcFAQEBATg3hAQBBAFWIwULCAMhJQ8BBA0YChoTiC4DCQy1Vw2GWgEXjSCBVVgHLoQeBZpighCOc4obPC+BBoFJAQEB X-IronPort-AV: E=Sophos;i="5.04,481,1406588400"; d="scan'208";a="645489070" Original-Received: from host-2-96-186-100.as13285.net (HELO arudy) ([2.96.186.100]) by out1.ip06ir2.opaltelecom.net with ESMTP; 07 Sep 2014 11:33:27 +0100 Original-Received: from neil-laptop.ossau.homelinux.net (unknown [192.168.11.4]) by arudy (Postfix) with ESMTPSA id D92AA38085; Sun, 7 Sep 2014 11:33:04 +0100 (BST) In-Reply-To: <87ppf9g76m.fsf@taylan.uni.cx> (Taylan Ulrich Bayirli's message of "Fri, 05 Sep 2014 22:10:09 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 62.24.128.242 X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: guile-user-bounces+guile-user=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.user:11481 Archived-At: Taylan Ulrich Bayirli/Kammer writes: > Panicz Maciej Godek writes: > >> [...] it's hard for me to see the advantage of FRP over OOP in >> practical systems (e.g. windowed applications with buttons and so >> on). [...] > > An off-topic remark: > > I don't know about *functional* reactive programming but from my > experience so far as an iOS developer, I've been *longing* for a > reactive programming system that automates state changes even if not > fully hiding them. It would be invaluable being able to say > "button2.leftEdge = button1.rightEdge + 20px" and have this equation be > held automatically on changes to the layout of button1 (which might > happen because it itself reacts to other layout changes), or to be able > to say "button.disabled = condition1 or condition2" and have the > disabled status of button update automatically as the truthiness of the > conditions changes. (The former use-case is actually covered by "layout > constraints", but that's strictly limited to layouting.) IIRC, Metafont does that; but obviously it isn't intended as a general language. Are there more general languages that solve equations like this? Regards, Neil