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Date: Fri, 26 Nov 2010 21:46:25 +0100
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To: Ferenc Kovacs <info@tyrael.hu>
Cc: Felipe Pena <felipensp@gmail.com>, internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] new foo()->bar()
From: peter.e.lind@gmail.com (Peter Lind)

On 26 November 2010 21:37, Ferenc Kovacs <info@tyrael.hu> wrote:
>
>
> On Fri, Nov 26, 2010 at 9:25 PM, Peter Lind <peter.e.lind@gmail.com> wrot=
e:
>>
>> On 26 November 2010 20:36, Felipe Pena <felipensp@gmail.com> wrote:
>> > Hi all,
>> > I'm here again to presents another proposal, which adds support for
>> > instantiating a class and calling its methods and accessing its
>> > properties
>> > on same command.
>> >
>> > Example:
>> >
>> > <?php
>> >
>> > class bar {
>> > =C2=A0public $x =3D 'PHP';
>> > }
>> >
>> > class foo extends bar {
>> > =C2=A0public function bar() {
>> > =C2=A0 =C2=A0return $this;
>> > =C2=A0}
>> > }
>> >
>> > var_dump(new foo()->bar()->x); // string(3) "PHP"
>> >
>> > ?>
>> >
>> > Other examples which describes the feature at
>> > http://wiki.php.net/rfc/instance-method-call
>> >
>> > Thoughts?
>>
>> It seems fairly handy and I've been in situations where I wanted to do
>> something like that - in fact, I use factories to achieve something
>> similar.
>> =C2=A0However, the more I use it, the more it feels like introducing cod=
e
>> smells into my code. You're essentially instantiating an object only
>> to immediately throw it away. That means you don't actually need the
>> object at all, you should probably be looking for static methods or
>> class properties. Trying to avoid statics by introducing a way to
>> instantiate and throw away objects in the same statement feels a lot
>> like reinventing OOP while adding overhead.
>>
>> Anyway, just a personal observation. I generally favour the way that
>> PHP allows you to dig your own grave (i.e. I love the freedom of the
>> language), so as a developer I would probably favour this as well,
>> though I find it mainly a way to introduce hacks.
>>
>
> 1, I have to use a non-trivial library or "module" for a simple task, and=
 I
> don't want to write 20 line of code, and introduce 4 helper variable.

If it's a one-off, then I really don't see the problem. If you're
facing it again, write a facade.

> 2. I want to get from point 1 to point 5 but I'm not interested in the st=
eps
> in-between (classical method chaining), but sadly one of the steps requir=
es
> object=C2=A0instantiation.

If it's your code, then why are you not simplifying it? What's the
point of writing code that you have to go through in five steps? Why
not write a wrapper method?
 The reasons presented sounds quite like "I want to be able write
hacks easier" rather than "I want to fix an actual problem". I.e.
there are solutions for this already that use OOP principles.

That said, this fix may very well address other situations :)

Regards
Peter

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