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Date: Tue, 12 Jan 2010 21:10:59 -0500
Message-ID: <68de37341001121810x10be424fu842402a398d3709e@mail.gmail.com>
To: mm w <0xcafefeed@gmail.com>
Cc: Chris Stockton <chrisstocktonaz@gmail.com>, internals@lists.php.net
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Subject: Re: [PHP-DEV] __toString(), __toArray()
From: oorza2k5@gmail.com (Eddie Drapkin)

How does this have *anything* to do with the discussion at hand?

On Tue, Jan 12, 2010 at 9:09 PM, mm w <0xcafefeed@gmail.com> wrote:
> don't worry it's only for people who are working with MVC and
> RootObject structure, there is too much magics already and __cast is
> not needed at all,
> as we cannot monkey patch to add an observer on itself, a nice
> solution should have a catchable object so __catch any calls
>
> function __catch($data, $type) {
> =C2=A0 =C2=A0if (method =3D=3D $type) {
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 if (data[selector] =3D 'setValue' && observed=
ValueForKeyPath) {
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 $this->_setValue(($data['arg'])=
;
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 return;
> =C2=A0 =C2=A0 =C2=A0 =C2=A0 }
> =C2=A0 =C2=A0}
> =C2=A0 =C2=A0continue_natural_call();
> }
>
> we could imagine to have a root-object-built-in-class that is
> naturally observable, or a root classObject at all, anyway it's only
> something for people who are doing OO programming,
> so don't worry
>
> On Tue, Jan 12, 2010 at 2:40 PM, Chris Stockton
> <chrisstocktonaz@gmail.com> wrote:
>> Hello,
>>
>> On Mon, Jan 11, 2010 at 8:32 PM, mm w <0xcafefeed@gmail.com> wrote:
>>> cast is not needed in PHP
>>>
>>> i 'd rather be more interesting in
>>>
>>> class Obj {
>>> =C2=A0 =C2=A0 function __catch($data, $type) {
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0//$type [ static_method, metho=
d, get_property, set_property]
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0if (observed && =C2=A0$type =
=3D=3D set_property && somevalueIsObserved) {
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0$observer=
->notify("somevalue::valueWillChanged");
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0$this->so=
mevalue =3D $data['somevalue'];
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0$observer=
->notify("somevalue::valueDidChanged");
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0} else {
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0continue_=
_call();
>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0}
>>> =C2=A0 =C2=A0 }
>>> }
>>
>> What? ...
>>
>>>> Etienne Kneuss wrote:
>>>> This is where operator over-loading would be useful however perhaps on=
ly
>>>> explicit casts would make sense here.
>>
>> I beleive adding a __cast(string $type) would be a useful feature for
>> me, very often I have a toArray method defined. I agree with you that
>> due to unexpected edge cases with operator precedence and general type
>> juggling that __cast should only be called on explicit (cast).
>>
>> I.E.:
>> class Int { public function __cast($type) { return 'int' =3D=3D $type ? =
15 : 0; } }
>> $r =3D new Int;
>>
>> var_dump($r + 1); // 2
>> var_dump((int) $r + 1); // 16
>> var_dump((bool) $r + 1); // 1
>>
>
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