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Subject: Re: [PHP-DEV] RFC: Traits for PHP
From: php@stefan-marr.de (Stefan Marr)

Hi,

> The above presents a problem if trait2 contains conflicting method
> names, but a simple way to solve it would be to automatically alias
> methods by prepending traitname::
> 
> <?php
> 
> trait trait1 { function a(){}}
> trait trait2 { function a(){}}
> class Blah extends ... implements ... traits trait1, trait2, trait3 {
> }
> ?>
> 
> would create method "trait2::a" and we can alias it in the class body.
> 
> Also, $a->{'trait2::a'}(); is legal syntax, so no problems there.
> 
> Example:
> <?php
> 
> trait trait1 { function a(){}}
> trait trait2 { function a(){}}
> class Blah extends ... implements ... traits trait1, trait2, trait3 {
>     function trait2::a as b;
> }
> ?>
> 
> This would be 100% obvious to me, and far clearer for reading since we
> would be explicitly saying we're aliasing a function.
Could you please explain where in your proposal is the difference to the 
multiple inheritance available in C++?
Think the auto-aliasing will lead to nothing else then multiple 
inheritance, with all its power and complexity.

One of the main problems here is the fragility, already pointed out be 
Joshua in its response from today.

Kind Regards