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Reply-To: Levi Morrison <levi.morrison@datadoghq.com>
Date: Mon, 12 Jun 2023 12:13:43 -0600
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To: =?UTF-8?B?TcOhdMOpIEtvY3Npcw==?= <kocsismate90@gmail.com>
Cc: PHP Internals List <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] [Discussion] Clone with
From: internals@lists.php.net ("Levi Morrison via internals")

On Mon, Apr 17, 2023 at 12:32=E2=80=AFAM M=C3=A1t=C3=A9 Kocsis <kocsismate9=
0@gmail.com> wrote:
>
> Hi Everyone,
>
> Quite some time after mentioning the "clone with" construct the first tim=
e
> (at the end of the
> https://wiki.php.net/rfc/write_once_properties#run-time_behaviour section=
),
> finally I managed to create a working implementation for this feature whi=
ch
> would make it possible to properly modify readonly properties
> while simplifying how we write "wither" methods:
> https://wiki.php.net/rfc/clone_with
>
> Regards,
> M=C3=A1t=C3=A9 Kocsis

I apologize if this has been discussed before, as I have fallen very
behind on internals discussions. I think it would be helpful to add an
example where the object being cloned accesses its properties.
Something like this:

   $b =3D clone $a with ["count" =3D> $a->count * 2];

If this is not valid, or if it has unexpected behavior or semantics,
that should also be included in the RFC.