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Date: Sat, 27 Jul 2019 19:56:56 -0700
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Subject: Re: [PHP-DEV] Re: [RFC] Explicit call-site send-by-ref syntax
From: smalyshev@gmail.com (Stanislav Malyshev)

Hi!

>> In short, while currently we have
>>
>>     function byRef(&$ref) {...}
>>     byRef($var);
>>
>> this proposal would also allow
>>
>>     function byRef(&$ref) {...}
>>     byRef(&$var);

I am not sure why it is necessary. If you call a function, one would
assume you know what it is doing, at least you know its definition, and
with any modern IDE if you do not, it is a matter of one click (or less)
to reveal what the function does. So what is the point to mark it again?
Does not seem to add anything that the writer or reader doesn't know or
could easily find out.
It could also imply that if the call site does not bear & mark, then the
parameter can not be modified - which is not true (or only true for
primitive values) and would add to the confusion.

> I think it can either go forward as-is, in that it constitutes the first
> step towards bringing sanity to by-reference passing in the long term. Or I

Could you explain what you mean by "bringing sanity to by-reference
passing"? Maybe if it would be clearer what you're getting at, in that
context this proposal would be more understandable.

> could first try to push through
> https://wiki.php.net/rfc/namespace_scoped_declares or some variant thereof
> so that call-site reference passing annotations can be made required on a
> per-library/project basis.

That certainly would be very annoying and I would be very much against
it (and in general against the idea of fragmenting the language into a
thousand of tiny pieces with different syntax by adding more and more
local syntax-changing options) but I think this should be discussed
separately so I'll say no more here.

-- 
Stas Malyshev
smalyshev@gmail.com