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Subject: Re: [PHP-DEV] [RFC] Operator Overrides -- Lite Edition
In-Reply-To: <DD3C5488-4C11-4393-A45D-60F8C49B4DA0@sakiot.com>
Cc: Jordan LeDoux <jordan.ledoux@gmail.com>, internals@lists.php.net
Date: Sat, 29 Jun 2024 23:45:59 +0900
Message-ID: <7E6F1153-166F-419B-92BA-E0EA2B0984D3@sakiot.com>
References: <DD3C5488-4C11-4393-A45D-60F8C49B4DA0@sakiot.com>
To: Rob Landers <rob@bottled.codes>
From: saki@sakiot.com (Saki Takamachi)

I'll add a little more.

> I would like to state my opinion on this matter, making it clear that I am=
 of the opinion that "GMP class should be final."
>=20
> First of all, to meet the requirements that are the basis of this discussi=
on, it is not actually necessary to expose the calculation logic; it is enou=
gh to simply specify the class of result.
>=20
> A practical approach to get around this issue is to tell php what class th=
e result should be.
>=20
> For example, could prepare a method like `resultClass(string $num1Class, s=
tring $num2Class, string $calcType): string|false`, and return the class nam=
e of the result based on the class names of the two objects to be calculated=
 and the calculation type, such as addition or subtraction.
>=20
> PHP calls this method as a "hook" when it finishes a calculation and retur=
ns the result to determine the class of the return value.
>=20
> But I don't like this because it's a "hacky" way of doing things with zend=
. Also, I am concerned about the cost of doing this for every calculation.
>=20
> The reason I'm putting together what I consider to be a bad method is beca=
use it's possible that you or someone else will take my idea, add a twist th=
at I haven't thought of, and come up with a way to make it all work.
>=20
> Regards,
>=20
> Saki

This method is actually not as simple as it may seem. The problem of commuta=
tivity still exists as to which to prioritize when calculating between diffe=
rent classes.

And if the child class has its own properties that must be specified in the c=
onstructor, you need to figure out how to store them.

Regards,

Saki=