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Date: Fri, 13 Sep 2019 09:15:27 +0200
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To: Claude Pache <claude.pache@gmail.com>
Cc: Lynn <kjarli@gmail.com>, PHP Internals List <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [RFC] Object Initializer
From: michal.brzuchalski@gmail.com (=?UTF-8?Q?Micha=C5=82_Brzuchalski?=)

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Hi Claude,

pt., 13 wrz 2019 o 08:39 Claude Pache <claude.pache@gmail.com> napisa=C5=82=
(a):

>
>
> Le 13 sept. 2019 =C3=A0 07:49, Micha=C5=82 Brzuchalski <michal.brzuchalsk=
i@gmail.com>
> a =C3=A9crit :
>
> Hi Lynn,
>
> czw., 12 wrz 2019 o 17:01 Lynn <kjarli@gmail.com> napisa=C5=82(a):
>
> Heya,
>
> What's the added benefit of this compared to implementing a constructor?
>
> The part I like is that this can be used to replace stdClass/structured
> arrays. Perhaps something like this would nice to have in PHP:
>
> ```
> $people =3D [];
>
> foreach ($peopleFromDatabase as [$id, $username, $name]) {
>    $people[] =3D {
>        Uuid id =3D> $id,
>        string username =3D> $username,
>        string name =3D> $name,
>    };
>    // and possible automatic assignment:
>    $people[] =3D {Uuid $id, string $username, string $name};
> }
> ```
>
>
> Removing stdClass for instantiation and initialization of simple objects =
is
> one of a future scope proposal.
>
> This RFC tries to address instantiation and initialization boilerplate
> reduction with a syntax which would
> not be restricted to stdClass only.
>
> Although it's not a game-changer, simple addition to the language which
> reduces boilerplate when dealing
> with objects which don't need complex constructors like for eg. DTO
> objects.
>
>
> As for `stdClass`, PHP has already a syntax:
>
>     $baz =3D "baz";
>     $obj =3D (object) [
>         "foo" =3D> "bar",
>         $baz =3D> true
>     ];
>
> For other type of objects, that could be done with a simple helper functi=
on
>
>     $customer =3D object_assign(new Customer, [
>         "id" =3D> 123,
>         "name" =3D> "John Doe",
>     ]);
>
> where:
>
>     function object_assign(object $obj, iterable $data): object {
>         foreach ($data as $key =3D> $value) {
>             $obj->$key =3D $value;
>         }
>         return $obj;
>     }
>
> That said, I generally use arrays rather than DTO objects or such, so tha=
t
> I can=E2=80=99t speak from experience.
>
> =E2=80=94Claude
>
>
You're of course right this can be done more or less with a helper function
which does all the required type
validation through reflection, but I believe that feature requests for
language support which reduces boilerplate
can easily spread that simplification and bring all the required type check
validations out of the box, right?

IMO the thing is as you said this would require a helper function and not
all simply like them!

Regards,
Micha=C5=82 Brzuchalski

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