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Date: Fri, 13 Sep 2019 08:39:52 +0200
In-Reply-To: <CABdc3WravK6Xgqd9zcskdmVAxO+ewekXB=HsSc56+HVfcWDa+g@mail.gmail.com>
Cc: Lynn <kjarli@gmail.com>,
 PHP Internals List <internals@lists.php.net>
To: =?utf-8?Q?Micha=C5=82_Brzuchalski?= <michal.brzuchalski@gmail.com>
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Subject: Re: [PHP-DEV] [RFC] Object Initializer
From: claude.pache@gmail.com (Claude Pache)

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> Le 13 sept. 2019 =C3=A0 07:49, Micha=C5=82 Brzuchalski =
<michal.brzuchalski@gmail.com> a =C3=A9crit :
>=20
> Hi Lynn,
>=20
> czw., 12 wrz 2019 o 17:01 Lynn <kjarli@gmail.com =
<mailto:kjarli@gmail.com>> napisa=C5=82(a):
>=20
>> Heya,
>>=20
>> What's the added benefit of this compared to implementing a =
constructor?
>>=20
>> 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:
>>=20
>> ```
>> $people =3D [];
>>=20
>> foreach ($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};
>> }
>> ```
>>=20
>=20
> Removing stdClass for instantiation and initialization of simple =
objects is
> one of a future scope proposal.
>=20
> This RFC tries to address instantiation and initialization boilerplate
> reduction with a syntax which would
> not be restricted to stdClass only.
>=20
> 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.
>=20

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 =
function

    $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 =
that I can=E2=80=99t speak from experience.

=E2=80=94Claude


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