Newsgroups: php.internals Path: news.php.net Xref: news.php.net php.internals:46134 Return-Path: Mailing-List: contact internals-help@lists.php.net; run by ezmlm Delivered-To: mailing list internals@lists.php.net Received: (qmail 72300 invoked from network); 20 Nov 2009 22:15:01 -0000 Received: from unknown (HELO lists.php.net) (127.0.0.1) by localhost with SMTP; 20 Nov 2009 22:15:01 -0000 Authentication-Results: pb1.pair.com smtp.mail=rasmus@lerdorf.com; spf=permerror; sender-id=unknown Authentication-Results: pb1.pair.com header.from=rasmus@lerdorf.com; sender-id=unknown Received-SPF: error (pb1.pair.com: domain lerdorf.com from 209.85.211.183 cause and error) X-PHP-List-Original-Sender: rasmus@lerdorf.com X-Host-Fingerprint: 209.85.211.183 mail-yw0-f183.google.com Received: from [209.85.211.183] ([209.85.211.183:39405] helo=mail-yw0-f183.google.com) by pb1.pair.com (ecelerity 2.1.1.9-wez r(12769M)) with ESMTP id E4/A2-25743-3E4170B4 for ; Fri, 20 Nov 2009 17:15:00 -0500 Received: by ywh13 with SMTP id 13so4361310ywh.29 for ; Fri, 20 Nov 2009 14:14:57 -0800 (PST) Received: by 10.101.151.9 with SMTP id d9mr2866782ano.169.1258755297113; Fri, 20 Nov 2009 14:14:57 -0800 (PST) Received: from ?192.168.200.22? (c-98-234-184-167.hsd1.ca.comcast.net [98.234.184.167]) by mx.google.com with ESMTPS id 22sm925481yxe.3.2009.11.20.14.14.55 (version=TLSv1/SSLv3 cipher=RC4-MD5); Fri, 20 Nov 2009 14:14:55 -0800 (PST) Message-ID: <4B0714DD.9030500@lerdorf.com> Date: Fri, 20 Nov 2009 14:14:53 -0800 User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Samuel ROZE CC: internals@lists.php.net References: <18e9608a0911201356g4d3ca1ffsef1499c7ada929f6@mail.gmail.com> In-Reply-To: <18e9608a0911201356g4d3ca1ffsef1499c7ada929f6@mail.gmail.com> X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [PHP-DEV] Intervals representation with brackets From: rasmus@lerdorf.com (Rasmus Lerdorf) Samuel ROZE wrote: > Hello, > > I'm working on two classes, Interval and IntervalList which describe > an interval and a list of intervals. These intervals are defined using > the Interval class: > > $interval = new Interval((int) $from, (int) $to); > ?> > > These intervals can be stored in a list of intervals, using IntervalList: > > $list = new IntervalList(); > $list->add($interval_1); > $list->add($interval_2); > ?> > > IntervalList's functions are: > - inverse(); which returns an IntervalList object > - intersection(); which returns an IntervalList object of intervals > which are contained by every interval of this list. > > To be easier, what do you think about: > // An interval with [ & ] > $interval = [ (int) $from, (int) $to ]; > ?> > > // A list of intervals > $list = [ $from_1, $to_1] + [$from_2, $to_2] + ... [$from_n, $to_n]; > $list_2 = [$from_1, $to_1] + ... + $interval_n; > ?> No chance that top-level square brackets will mean intervals, sorry. -Rasmus