Newsgroups: php.internals
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Date: Sat, 09 May 2020 20:18:14 +0200
To: "Levi Morrison" <levi.morrison@datadoghq.com>
Cc: "Dan Ackroyd" <Danack@basereality.com>,
	"Rowan Tommins" <rowan.collins@gmail.com>,
	"internals" <internals@lists.php.net>
Message-ID: <171faa8bd01.1212a57bc609801.3207343136239923022@manuelcanga.dev>
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Subject: Re: [PHP-DEV] [RFC] Keep type of reference params
From: php@manuelcanga.dev (Manuel Canga)



 ---- En vie, 08 may 2020 15:31:52 +0200 Levi Morrison <levi.morrison@datad=
oghq.com> escribi=C3=B3 ----
 > I think changing reference is a bad idea, even if it's behind some
 > sort of declare or ini setting or what-have-you.
 >=20
 > I do support `inout`, which has similar high-level outcomes: the
 > current value is fed in, and when the function returns it has a new
 > value. I think we should use `&` at the call site, and we should also
 > permit it optionally for by-ref parameters as it provides a migration
 > path: first add `&` to all the call sites, then switch it to `inout`.
=20
Hi, Levi,

Thanks for your opinion.

Why don't reverse mode ?.=20

'inout' is created with the three characteristics:
=20
- Check type of out is equal to type of param
- Avoid modifying caller variable value when the function throws an excepti=
on. ( Like  inout of Hacker language )
- Allow explicit call-site pass-by-reference annotation.=20

Then, current references are deprecated and after than, in other version, t=
hey are removed.

In this way, projects can be adapted gradually

Regards
--
Manuel Canga