Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:47895
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: error (pb1.pair.com: domain stefan-marr.de from 85.88.12.247 cause and error)
Mime-Version: 1.0 (Apple Message framework v1078)
Content-Type: text/plain; charset=us-ascii
In-Reply-To: <003701cada4a$196d29a0$4c477ce0$@com>
Date: Mon, 12 Apr 2010 23:04:43 +0200
Cc: "'Lukas Kahwe Smith'" <mls@pooteeweet.org>,
 "'Derick Rethans'" <derick@derickrethans.nl>,
 "'PHP Developers Mailing List'" <internals@lists.php.net>
Content-Transfer-Encoding: quoted-printable
Message-ID: <93850919-9510-4766-BE8B-06A17494B544@stefan-marr.de>
References: <alpine.DEB.2.00.1004120931260.8571@kossu.derickrethans.nl> <03128BF8-9EAC-4BAC-AAFE-6D8AA21153DC@pooteeweet.org> <4DA7D942-6BF1-4A0F-AECF-3EB82900798D@stefan-marr.de> <003701cada4a$196d29a0$4c477ce0$@com>
To: Jonathan Bond-Caron <jbondc@openmv.com>
Subject: Re: [PHP-DEV] Traits
From: php@stefan-marr.de (Stefan Marr)


On 12 Apr 2010, at 16:11, Jonathan Bond-Caron wrote:

> On Mon Apr 12 05:16 AM, Stefan Marr wrote:
>>=20
>> On 12 Apr 2010, at 10:39, Lukas Kahwe Smith wrote:
>>> On 12.04.2010, at 10:34, Derick Rethans wrote:
>>>> Hi!
>>>>=20
>> But just as a quick response, without aliasing, there would be no way=20=

>> to use a conflicting method from a trait.
>> On first sight, that is not a really good thing.
>=20
> Hi Stefan, is it possible to have renaming and aliasing?=20
>=20
> Some context, say we have:=20
>=20
> trait Something {=20
>  function renameIssue() {
> 	$method =3D 'call';
>         $this->$method();
> 	call_user_func(array($this, $method));
>  }
>  function call () {    echo "a"; }
   function invokeCallDirectly() { $this->call(); }
> }
>=20
> class Foo {
>   use Something {
>     function call() as call2();
>   }
> }
>=20
> With renaming:
>=20
> $f =3D new Foo;
> $f->call2(); 		// a
> $f->renameIssue();   	// call() method does not exist

I have added invokeCallDirectly() to your example. What should be the =
semantics of that? Should that call be refitted to invoke call2?=20
Am not sure that this is a good idea, with all this other ways around to =
call methods dynamically. Ok, aliasing is 'kind of annoying' and unusual =
but from my perspective not much different then what we do with =
variables every day. They reference objects, and we introduce new =
aliases for old objects every now and then.


> the syntax could re-use the 'clone' keyword:
>=20
> class Foo {
>   use Something {
>     function call() clone call2();
>   }
> }

Would be an option, but it reads kind of strange, doesn't it?



Best regards
Stefan

--=20
Stefan Marr
Software Languages Lab
Vrije Universiteit Brussel
Pleinlaan 2 / B-1050 Brussels / Belgium
http://soft.vub.ac.be/~smarr
Phone: +32 2 629 2974
Fax:   +32 2 629 3525