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Date: Thu, 9 Sep 2021 10:47:26 -0400
Cc: PHP internals <internals@lists.php.net>
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To: =?utf-8?Q?Fl=C3=A1vio_Heleno?= <flaviohbatista@gmail.com>
Subject: Re: [PHP-DEV] [RFC] $this return type
From: mike@newclarity.net (Mike Schinkel)

> On Sep 9, 2021, at 10:26 AM, Fl=C3=A1vio Heleno =
<flaviohbatista@gmail.com> wrote:
>=20
> On Tue, Sep 7, 2021 at 10:27 AM Sebastian Bergmann <sebastian@php.net>
> wrote:
>=20
>> Am 07.09.2021 um 12:28 schrieb Nikita Popov:
>>> I have some reservations about this (which basically come down to =
$this
>> not
>>> being a proper "type", so should it be in the type system?) but I =
can see
>>> the practical usefulness, so I think it's worth discussing this.
>>=20
>> I am not conviced that there is enough value in this to introduce =
syntax
>> for it, but if at all, then please not "$this" as the name for a =
type.
>>=20
>> Off the top of my head, I think that "same" could make sense.
>>=20
>> --
>> PHP Internals - PHP Runtime Development Mailing List
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>>=20
>>=20
> Hi all,
>=20
> I'm sorry if I'm being naive, or simply put dumb, but the main =
difference
> that we're trying
> to achieve with having "$this" (or variations of it) as a valid return =
type
> as opposed to simply
> using "self" is to ensure that the underlying code is actually doing a
> "return $this" rather
> than returning any other valid "self" instance (such as "return new
> self();")?

So a *mutable* fluent style vs. an *immutable* fluent style?

-Mike