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Date: Sun, 30 Jun 2024 10:56:30 +0200
To: "Saki Takamachi" <saki@sakiot.com>
Cc: "Gina P. Banyard" <internals@gpb.moe>, internals@lists.php.net
Subject: Re: [PHP-DEV] [RFC] Operator Overrides -- Lite Edition
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From: rob@bottled.codes ("Rob Landers")

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On Sun, Jun 30, 2024, at 09:31, Saki Takamachi wrote:
> Hi,
>=20
> >> It seems like the "hack" I mentioned is still possible, am I misund=
erstanding something?
> >=20
> > That=E2=80=99s always going to be a possibility, no matter what we d=
o or how we do it. I think it would be a rather pointless hack now that =
I can run the code. For the most part, the engine treats these as number=
s and trying to dodge that will land you in hot water eventually.=20
>=20
> I'm not sure. Does this mean that such "hack" is unavoidable?
>=20
> And I don't really understand what "pointless hack" means. This would =
make sense if operator overloading was already allowed, but it isn't.

Not unavoidable, but pointless. For example, I attempted to create a Str=
ing class that used + for concatenation. This kinda works, but if you pa=
ss it to something that takes a string, you get the underlying number an=
d not the string you were trying to store. This is because GMP takes ove=
r casting forcing you to stick to numerical constructs.

>=20
> >> And I don't understand the purpose of polyfills at all. If you're n=
ot using the GMP extensions and can't do operator overloading, won't you=
 just have a class with protected methods that are never used and don't =
actually do anything?
> >=20
> > Ah, that could probably be clearer in the RFC, but you have to make =
it public to be able to use it.
> >=20
> > It=E2=80=99s a bit clunky to use without the extension, but that=E2=80=
=99s mostly because I didn=E2=80=99t want to get into OperandPosition fr=
om Jordan=E2=80=99s RFC. Many people were confused about it, so I=E2=80=99=
m just avoiding it.
>=20
> This is very confusing me. Why does this need to be a child class of G=
MP?

This is addressed in the current RFC text, if I missed something, please=
 ask!

=E2=80=94 Rob
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<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div><br></div><div>=
<br></div><div>On Sun, Jun 30, 2024, at 09:31, Saki Takamachi wrote:<br>=
</div><blockquote type=3D"cite" id=3D"qt" style=3D""><div>Hi,<br></div><=
div><br></div><div>&gt;&gt; It seems like the "hack" I mentioned is stil=
l possible, am I misunderstanding something?<br></div><div>&gt;&nbsp;<br=
></div><div>&gt; That=E2=80=99s always going to be a possibility, no mat=
ter what we do or how we do it. I think it would be a rather pointless h=
ack now that I can run the code. For the most part, the engine treats th=
ese as numbers and trying to dodge that will land you in hot water event=
ually.&nbsp;<br></div><div><br></div><div>I'm not sure. Does this mean t=
hat such "hack" is unavoidable?<br></div><div><br></div><div>And I don't=
 really understand what "pointless hack" means. This would make sense if=
 operator overloading was already allowed, but it isn't.<br></div></bloc=
kquote><div><br></div><div>Not unavoidable, but pointless. For example, =
I attempted to create a String class that used + for concatenation. This=
 kinda works, but if you pass it to something that takes a string, you g=
et the underlying number and not the string you were trying to store. Th=
is is because GMP takes over casting forcing you to stick to numerical c=
onstructs.</div><div><br></div><blockquote type=3D"cite" id=3D"qt" style=
=3D""><div><br></div><div>&gt;&gt; And I don't understand the purpose of=
 polyfills at all. If you're not using the GMP extensions and can't do o=
perator overloading, won't you just have a class with protected methods =
that are never used and don't actually do anything?<br></div><div>&gt;&n=
bsp;<br></div><div>&gt; Ah, that could probably be clearer in the RFC, b=
ut you have to make it public to be able to use it.<br></div><div>&gt;&n=
bsp;<br></div><div>&gt; It=E2=80=99s a bit clunky to use without the ext=
ension, but that=E2=80=99s mostly because I didn=E2=80=99t want to get i=
nto OperandPosition from Jordan=E2=80=99s RFC. Many people were confused=
 about it, so I=E2=80=99m just avoiding it.<br></div><div><br></div><div=
>This is very confusing me. Why does this need to be a child class of GM=
P?<br></div></blockquote><div><br></div><div>This is addressed in the cu=
rrent RFC text, if I missed something, please ask!<br></div><div><br></d=
iv><div id=3D"sig121229152">=E2=80=94 Rob<br></div></body></html>
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