Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:49811
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: error (pb1.pair.com: domain schlueters.de from 217.114.211.66 cause and error)
To: Adam Harvey <aharvey@php.net>
Cc: PHP internals <internals@lists.php.net>
In-Reply-To: <AANLkTimG-BJyqvf5-6iFJ5Q6e5FouL+9mnkTNVmsKi+r@mail.gmail.com>
References: <AANLkTimG-BJyqvf5-6iFJ5Q6e5FouL+9mnkTNVmsKi+r@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Date: Thu, 30 Sep 2010 16:24:01 +0200
Message-ID: <1285856641.16846.92.camel@guybrush>
Mime-Version: 1.0
Content-Transfer-Encoding: 8bit
Subject: Re: [PHP-DEV] RFC: Comparable interface
From: johannes@schlueters.de (Johannes =?ISO-8859-1?Q?Schl=FCter?=)

On Thu, 2010-09-30 at 21:33 +0800, Adam Harvey wrote:
> All,
> 
> I've just written an RFC (with a patch against trunk) to implement a
> Comparable interface similar to that in Java — in effect, allowing
> object instances to be compared with semantics defined in userspace.
> This is admittedly at the lower end of RFC-worthy proposals, but it's
> a good system, and I'd like to see it used a little more. Plus, it's
> good practice for the more interesting stuff to come. :)

What is this "more interesting stuff to come"? - currently it is a bit
syntactic sugar, one might argue a feature which makes reading code
harder(*), and we are careful with adding such.


(*) Right now it is quite clear what happens if you read
     $a == $b
there are a few edge cases (0 == "100000 mails ina thread") but overall
quite clear. With your patch "anything" might happen, which is hard to
detect as we don't enforce strong typing, which would give a hint.

johannes