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Date: Wed, 6 Jun 2012 12:39:12 +0200
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To: ivan.enderlin@hoa-project.net
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Subject: Re: [PHP-DEV] Generators in PHP
From: linepogl@gmail.com (Lazare Inepologlou)

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Hello Ivan,


Moreover, I wonder how a =E2=80=9Crecursive yield=E2=80=9D would act (somet=
hing like
> =E2=80=9Cpublic function *f ( =E2=80=A6 ) { =E2=80=A6 yield $this->f(=E2=
=80=A6); =E2=80=A6 }=E2=80=9D). It is possible? Is
> it anticipated?
>


According to the RFC, your syntax will yield an entire generator and not
its intividual values. Please consider this example:

function * f() { ... }
function * g() {
  yield f();
}
function * h() {
  foreach( f() as $key =3D> $value )
    yield $key =3D> value;
}

The pattern in function h() is quite common, and it is what you ask for. It
would be nice to have some syntactical sugar for it, maybe something like
that:

public function * h() {
  yield foreach f();
}



Good work, I am looking forward to having generators in php.

Lazare INEPOLOGLOU
Ing=C3=A9nieur Logiciel


2012/6/6 Ivan Enderlin @ Hoa <ivan.enderlin@hoa-project.net>

> On 05/06/12 19:35, Nikita Popov wrote:
>
>> Hi internals!
>>
> Hi Nikita,
>
>  Before going any further I'd like to get some comments about what you
>> think of adding generator support to PHP.
>>
> I have always hoped to see the =E2=80=9Cyield=E2=80=9D keywork introduced=
 in PHP. I even
> suggested that in this mailing-list at least one time but I'm very glad t=
o
> see some patches coming out.
>
> In addition to Gustavo's remarks, I wonder how the GC would collect a
> Generator object that is not use anymore (especially with a referenced
> yield). Does it fit to the current CG strategy or do we need an extra
> strategy? I would notice that the =E2=80=9CYield by reference=E2=80=9D se=
ction does not
> exist but you have targeted it).
> Moreover, I wonder how a =E2=80=9Crecursive yield=E2=80=9D would act (som=
ething like
> =E2=80=9Cpublic function *f ( =E2=80=A6 ) { =E2=80=A6 yield $this->f(=E2=
=80=A6); =E2=80=A6 }=E2=80=9D). It is possible? Is
> it anticipated?
>
> Thanks for you work.
>
> Cheers.
>
> --
> Ivan Enderlin
> Developer of Hoa
> http://hoa.42/ or http://hoa-project.net/
>
> PhD. student at DISC/Femto-ST (Vesontio) and INRIA (Cassis)
> http://disc.univ-fcomte.fr/ and http://www.inria.fr/
>
> Member of HTML and WebApps Working Group of W3C
> http://w3.org/
>
>
>
> --
> PHP Internals - PHP Runtime Development Mailing List
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>

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