Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:68051
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain cypressintegrated.com designates 173.1.104.101 as permitted sender)
Date: Wed, 3 Jul 2013 14:05:14 -0400
Reply-To: Sanford Whiteman <swhitemanlistens-software@cypressintegrated.com>
Message-ID: <1668753851.20130703140514@cypressintegrated.com>
To: Terence Copestake <internals@lists.php.net>
In-Reply-To: <CAPMc8uZswAn6Whsu7=M_q-d-jt4Szr1=outkK0vXwCnZsQ+8_g@mail.gmail.com>
References: <CAPMc8uZswAn6Whsu7=M_q-d-jt4Szr1=outkK0vXwCnZsQ+8_g@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Subject: Re: [PHP-DEV] New feature: sequential constructors
From: swhitemanlistens-software@cypressintegrated.com (Sanford Whiteman)

I suggest you read this recent thread for related commentary.

  http://www.serverphorums.com/read.php?7,712222 
  
In there, I refer to your proposal as Contractual Call Super and I
find it an interesting concept that helps avoid the "advisory call
super" antipattern.

However --

> If the introduction of a new keyword is problematic, perhaps this same
> behaviour could be enacted in cases where an inheriting class has a
> constructor and the base class' constructor is defined as final i.e. rather
> than causing an error, the final constructor is executed first, followed by
> any other constructors in the hierarchy.

-- this is a horrible idea. `final` has distinct semantic meaning. It
means "cannot override." It doesn't mean "overrideable, but we'll call
any/all supers before/after we run yours." It's a BC break.
Fuggedaboutit.

The feature you want isn't in the language -- maybe it should be --
and you can't change the meaning of existing keywords.

-- S.