Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:98598
Return-Path: <johannes@schlueters.de>
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Delivered-To: mailing list internals@lists.php.net
Received: (qmail 5644 invoked from network); 20 Mar 2017 01:22:41 -0000
Received: from unknown (HELO lists.php.net) (127.0.0.1)
  by localhost with SMTP; 20 Mar 2017 01:22:41 -0000
Authentication-Results: pb1.pair.com smtp.mail=johannes@schlueters.de; spf=permerror; sender-id=unknown
Authentication-Results: pb1.pair.com header.from=johannes@schlueters.de; sender-id=unknown
Received-SPF: error (pb1.pair.com: domain schlueters.de from 84.19.169.162 cause and error)
X-PHP-List-Original-Sender: johannes@schlueters.de
X-Host-Fingerprint: 84.19.169.162 mail.experimentalworks.net  
Received: from [84.19.169.162] ([84.19.169.162:60326] helo=mail.experimentalworks.net)
	by pb1.pair.com (ecelerity 2.1.1.9-wez r(12769M)) with ESMTP
	id 0A/B6-18522-FDE2FC85 for <internals@lists.php.net>; Sun, 19 Mar 2017 20:22:40 -0500
Received: from [192.168.2.34] (ppp-46-244-187-212.dynamic.mnet-online.de [46.244.187.212])
	by mail.experimentalworks.net (Postfix) with ESMTPSA id C6E1352C25;
	Mon, 20 Mar 2017 02:22:36 +0100 (CET)
Message-ID: <1489972951.29726.2.camel@kuechenschabe>
To: David Rodrigues <david.proweb@gmail.com>
Cc: Niklas Keller <me@kelunik.com>, PHP Internals <internals@lists.php.net>
Date: Mon, 20 Mar 2017 02:22:31 +0100
In-Reply-To: <CAEsg9X3SRrsn5UgQVXokdi4dbv+QSxhFGeFT2QHUX28QsYD3VA@mail.gmail.com>
References: <ba9f19e2-813e-d704-75d9-796f9b634ffa@php.net>
	 <CANUQDCjgRw-p9SVVLevhgi4g7FvQOWi0a8G+R5dyoz1sC5nSbA@mail.gmail.com>
	 <CAEsg9X3SRrsn5UgQVXokdi4dbv+QSxhFGeFT2QHUX28QsYD3VA@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.10.4-0ubuntu2 
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: Re: [PHP-DEV] Let range() return a generator?
From: johannes@schlueters.de (Johannes =?ISO-8859-1?Q?Schl=FCter?=)

On Fr, 2017-03-17 at 04:02 -0300, David Rodrigues wrote:
> I guess that a lot of PHP functions that could be replaced by a
> Generator (basically all array functions like array_values(),
> array_keys(), etc).
> But there are a big question: could it be applied to any case? It will
> be faster than just an array? Certainly it will be more memory
> optimized.

It's quite complicated - these new functions would have to keep a
copy/reference of the original array. Also we'd have to allow iterators
as parameter for array functions and we couldn't do everything, as
result of some of these array functions are stuck into other array
routines etc.

johannes