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Date: Sun, 15 Jul 2007 19:12:08 -0700
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Subject: Re: [PHP-DEV] Simple Namespace Proposal
From: stas@zend.com (Stanislav Malyshev)

> The other thing that bothers me is namespaces nesting. It was said
> that namespaces
> nesting is not supported. Then I'm missing a point in having namespace
> named "A::B".

The same reason some people write $a = f($z, $t) and some write 
$parsed_template = template_parser($template, $data_values) :)

> Lets say I have three files:
> 
> a.php:
> <?php
> namespace A;
> 
> function foo()
> {
> }
> ?>
> 
> b.php:
> <?php
> namespace A::B;
> 
> function bar()
> {
>    //foo();
> }
> ?>
> 
> index.php:
> <?php
> require 'a.php';
> require 'b.php';
> 
> import A;
> foo(); // should call A::foo(), right?
> B::bar(); // will this call A::B::bar()?
> ?>

import A is a no-op. You do import A::B and then you can do B::bar.
import N means "something that is named N can now be referred only by 
it's 'last name' last(N), last name being last segment of the long 
name". If you have short names, you don't need namespaces, but if you 
have names like PEAR::DB::Record::Type::Modifier::Exception, you 
probably do :)

> Now if this does not work then whats the point in having namespace
> "A::B" instead of "A_B"? IMHO this brings more confusion then
> clearness.

The point is you can a) omit namespace prefix inside namespace and b) 
use just B (or C if you wish) instead of A::B outside, once you did 
import. As I said, with long names it makes sense, with short ones you 
are OK without it.
-- 
Stanislav Malyshev, Zend Software Architect
stas@zend.com   http://www.zend.com/
(408)253-8829   MSN: stas@zend.com