Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:42335
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmail.com designates 209.85.218.21 as permitted sender)
DomainKey-Status: bad
DomainKey-Signature: a=rsa-sha1; c=nofws;
        d=gmail.com; s=gamma;
        h=message-id:date:from:to:subject:cc:in-reply-to:mime-version
         :content-type:references;
        b=JqDLcRK/dnYcrrgc8yA1Q9WfdDjZQFupBSLfs7+NWdBYBn5qHKEy7of/Z4Seaft4kg
         Qqs1vwQmp6TTDvsi4u5Lm0Twvx6d8bqZp/0wMIfittC+1mQTyzn/U0NgRVdwX3GT5lOD
         XkJ/tShAVlU/LtKKeb/7CIbMPMmKPNhRbHefI=
Message-ID: <8637af910812181126y3c0f0badv64f591c22480834e@mail.gmail.com>
Date: Thu, 18 Dec 2008 20:26:12 +0100
To: "Dave Ingram" <dave@dmi.me.uk>
Cc: "Nathan Rixham" <nrixham@gmail.com>, internals@lists.php.net
In-Reply-To: <494A3B12.80509@dmi.me.uk>
MIME-Version: 1.0
Content-Type: multipart/alternative; 
	boundary="----=_Part_34292_4423135.1229628372569"
References: <69.22.48223.7E389494@pb1.pair.com> <494A3B12.80509@dmi.me.uk>
Subject: Re: [PHP-DEV] Q on Primitives
From: piccoloprincipeazzurro@gmail.com ("Giorgio Sironi")

------=_Part_34292_4423135.1229628372569
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

2008/12/18 Dave Ingram <dave@dmi.me.uk>

> Nathan Rixham wrote:
> > [...]
> >
> > while I'm here I may as well also ask about further adding type
> > hinting for the existing scalars and array.
> +1, but I don't know what might have stopped it being implemented before
> (time, parsing API changes, etc), so it would be interesting to look
> into the history.
>

This is simple to achieve with
    assert('is_string($argument)');

class MyTestClass {
>  public function blah(Foo $f);
>  public function blah(Bar $b);
>  public function blah($v);
> }
>
> I would argue that the most specific function should be called, but how
> costly would that be to determine? What if you have a "Baz" subclass of
> Bar, but no corresponding method? What if Bar itself is a subclass of Foo?
>

I remember that multiple signatures was said to have a possible very
difficult implementation. However, a similar behaviour can be achieved by
some instanceof().

-- 
Giorgio Sironi
Piccolo Principe & Ossigeno Scripter
http://www.sourceforge.net/projects/ossigeno

------=_Part_34292_4423135.1229628372569--