Re: [RFC] Operator Overrides -- Lite Edition

From: Date: Sun, 30 Jun 2024 11:37:11 +0000
Subject: Re: [RFC] Operator Overrides -- Lite Edition
References: 1  Groups: php.internals 
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Hi,

>> On Sun, Jun 30, 2024, at 13:05, Saki Takamachi wrote:
>> 
>> Hi,
>> 
>>>> I'm not sure. Does this mean that such "hack" is unavoidable?
>>>> 
>>>> 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 String class that
>>> used + for concatenation. This kinda works, but if you pass it to something that takes a string, you
>>> get the underlying number and not the string you were trying to store. This is because GMP takes
>>> over casting forcing you to stick to numerical constructs.
>> 
>> I don't understand why you only consider the casting case. You can simply convert it
>> to a string via a method. As long as don't use any casting at the end, users can implement it
>> however they like. I don't think this is a pointless hack.
>> 
>> Also, allowing "hack" just because they're not useful is not a good idea.
> 
> We could just delete php-src, grab a beer, and watch the sunset. I don’t think you’ll ever
> be able to stop some programmers from hacking things together to solve business problems though.
> I’ve “hacked” weakmaps in userland to make Hour(1) === (yes, there are three! Equals there)
> Minute(60).
> 
>> 
>> Again, if such functionality is provided, it should be exposed as formal support for
>> operator overloading.
> 
> Thank you for your opinion, this RFC doesn’t stop that from happening and is completely
> orthogonal.
> 
>> 
>>>> This is very confusing me. Why does this need to be a child class of GMP?
>>> 
>>> This is addressed in the current RFC text, if I missed something, please ask!
>> 
>> I don't understand why the GMP RFC mentions environments where GMP is not used.
>> 
>> There are a few other points worth mentioning, but the existence of polyfills makes this
>> especially confusing.
>> 
>> > To be usable, the developer must override the desired operations and make them public
>> 
>> Is this referring to a polyfill? Or is this just a necessary step to override the overload?
> 
> I recommend reading up on what a polyfill is, and why they are useful, if you are confused. But
> to answer your question, no, it has nothing to do with the polyfill, it’s just a necessary step.
> The polyfill is just provided for completeness. 
> 
>> 
>> Regards,
>> 
>> Saki
> 
> — Rob

I understand your point, and any further comment from me would probably be of little value to you.
This will be my last post on this thread.

I will definitely vote against this RFC unless the issues I have pointed out are addressed. No
matter how innocuous they may seem, I would rather not expose operator overloading in the form of
such "hack".

Regards,

Saki


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