From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Marko Rauhamaa Newsgroups: gmane.lisp.guile.user Subject: Re: ?-suffix for booleans... good-idea? or bad-idea? Date: Thu, 27 Apr 2017 15:07:42 +0300 Message-ID: <8760hqkq9d.fsf@elektro.pacujo.net> References: <878tmpoi3x.fsf@dustycloud.org> <87a872xhg1.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1493295152 18614 195.159.176.226 (27 Apr 2017 12:12:32 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 27 Apr 2017 12:12:32 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) Cc: "guile-user@gnu.org" To: Jan Nieuwenhuizen Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Thu Apr 27 14:12:28 2017 Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1d3iHc-0004lF-LQ for guile-user@m.gmane.org; Thu, 27 Apr 2017 14:12:28 +0200 Original-Received: from localhost ([::1]:60328 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3iHi-0005UM-AU for guile-user@m.gmane.org; Thu, 27 Apr 2017 08:12:34 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54316) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3iD5-0002Aw-N0 for guile-user@gnu.org; Thu, 27 Apr 2017 08:07:50 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d3iD4-0004v9-V1 for guile-user@gnu.org; Thu, 27 Apr 2017 08:07:47 -0400 Original-Received: from [2001:1bc8:1a0:5384:7a2b:cbff:fe9f:e508] (port=44878 helo=pacujo.net) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3iD4-0004uA-NF for guile-user@gnu.org; Thu, 27 Apr 2017 08:07:46 -0400 Original-Received: from elektro.pacujo.net (192.168.1.200) by elektro.pacujo.net; Thu, 27 Apr 2017 15:07:43 +0300 Original-Received: by elektro.pacujo.net (sSMTP sendmail emulation); Thu, 27 Apr 2017 15:07:42 +0300 In-Reply-To: <87a872xhg1.fsf@gnu.org> (Jan Nieuwenhuizen's message of "Thu, 27 Apr 2017 12:39:42 +0200") X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:1bc8:1a0:5384:7a2b:cbff:fe9f:e508 X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.lisp.guile.user:13643 Archived-At: Jan Nieuwenhuizen : > Christopher Allan Webber writes: > >> I've noticed that it's common in Guile modules to use "foo?" for >> variable names involving booleans. It's tempting, > >> But is it a good idea? > > It's an idea that I like and use. There are also the traditional: (let ((name$ "Henry Ford") (birth-year% 1863) (timestamp& 1493294649) (price@ 99.99) (slice! 0.6666667) (proportion# 0.66666666666666666666667)) ...) Marko