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Date: Tue, 3 Apr 2012 10:06:41 -0400
Message-ID: <CAAyV7nHC52=moQsTM0meauewqWC-pxbPWob793SLoF8hQqzbQg@mail.gmail.com>
To: Samuel Giles <sam.e.giles@gmail.com>
Cc: Rasmus Schultz <rasmus@mindplay.dk>, internals@lists.php.net
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Subject: Re: [PHP-DEV] resume after exception
From: ircmaxell@gmail.com (Anthony Ferrara)

Sam,

Just to be clear, I wasn't opposing pythonic generators.  I was
opposing using this feature for that purpose.  If we wanted
generators, I would suggest implementing them fully (as in adding a
`yield` statement).

However, that's not going to be as easy as it sounds, since what would
happen with a function like this:

function foo(array &$array) {
    foreach ($array as $value) {
        yield $value;
    }
}

$array =3D array(1);
foreach (foo($array) as $value) {
    $array[] =3D $value + 1;
}

Not saying it's not doable, just that it's not trivial to implement...

Anthony

On Mon, Apr 2, 2012 at 5:51 PM, Samuel Giles <sam.e.giles@gmail.com> wrote:
> Hi Anthony,
>
> Ok, I see that now. I know you're not necessarily saying what's been
> proposed is a good idea but I can see a benefit in pythonic style generat=
ors
> as a separate piece of functionality, implementing a yield function, has
> this ever been discussed before? My apologies if this is the case I've no=
t
> seen it since I've been following this list.
>
> I know there is the SPL Iterator, but just as in the example you provided
> implementations *can* be verbose and convoluted.
>
> Cheers,
> Sam
>
> On Mon, Apr 2, 2012 at 10:34 PM, Anthony Ferrara <ircmaxell@gmail.com>
> wrote:
>>
>> Sam,
>>
>> I'm not saying it's a good idea, but this would allow for pythonic
>> style generators. =A0http://wiki.python.org/moin/Generators
>>
>> Just pointing out one potential use-case...
>>
>> Anthony
>>
>> On Mon, Apr 2, 2012 at 4:35 PM, Samuel Giles <sam.e.giles@gmail.com>
>> wrote:
>> > My major concern would be, how does this* really* add to PHP? =A0Perha=
ps
>> > I'm
>> > missing the point, but what would this allow that can't be done in som=
e
>> > form using well defined "patterns", for lack of a better word.
>> >
>> > I'm not keen on the idea of throwing things such as Interrupts either,
>> > it
>> > doesn't quite fit with their general use case.
>> >
>> > Sam
>
>