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Date: Wed, 25 Sep 2013 14:02:49 +0100
Message-ID: <CAPMc8uaNXj4TC6wDh7OZWhF60QRO-fd1JccyK8CZffcMjrLrKQ@mail.gmail.com>
To: Joe Watkins <krakjoe@php.net>
Cc: "internals@lists.php.net" <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=047d7b677e58d6f1d804e734def2
Subject: Re: [PHP-DEV] RFC: Anonymous Classes
From: terence.copestake@gmail.com (Terence Copestake)

--047d7b677e58d6f1d804e734def2
Content-Type: text/plain; charset=ISO-8859-1

> 1) Anonymous classes in PHP would support a constructor, so I don't see
> the need for use to be utilized here, it would just clutter declarations
> and the patch.


This works, but it's more effort for the programmer and arguably just
moving the "clutter" from the declaration to the constructor.

e.g.

(new class ...
    protected $value;
    public function __construct($value)
    {
        $this->value = $value;
    }

    public function doSomething()
    {
        echo $this->value;
    })($val)

vs.

(new class ...
    public function doSomething() use ($val)
    {
        echo $val;
    })

It gets even uglier for passing by reference.


> 2) Again, constructors can be used, and is less confusing than introducing
> a new variable, but I'm open to persuasion if the idea is liked in general
> ...


This is fine when working with only a handful of values, but what about
needing access to a large number of values? What about making (especially
protected) method calls within the anon class?

Along the same vein, why did we even bother having "use" and $this for
closures, if you can after all just pass everything as arguments?

If there are realistic and elegant alternative solutions to the problems
presented, that's fair enough. Rejecting something because it's not as
simple to implement and you can hack around it in user code anyway...
that's a dangerous way to go about your business.

--047d7b677e58d6f1d804e734def2--