Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:109596
To: Ilija Tovilo <tovilo.ilija@gmail.com>, php internals
	<internals@lists.php.net>
Thread-Topic: [PHP-DEV] [DISCUSSION] Match expression
Thread-Index: AQHWEF+nZG5U35iOAE6gUQQi9rmkvqh1PESGgAA0H4CAABU2uw==
Date: Sun, 12 Apr 2020 14:18:08 +0000
Message-ID:
 <VI1PR08MB2813283C5F26DB5432904A15B8DC0@VI1PR08MB2813.eurprd08.prod.outlook.com>
References:
 <CAPyj-LDfdATXFD+dc5AY9EqWWxgf8LP1joD2fzvm==1gUoN35A@mail.gmail.com>
 <VI1PR08MB2813513D859F91441C020848B8DC0@VI1PR08MB2813.eurprd08.prod.outlook.com>,<CAPyj-LBvx4W38T6yeisOJAPXw8V+X1gg1+BSze4MWfTgMDethg@mail.gmail.com>
In-Reply-To:
 <CAPyj-LBvx4W38T6yeisOJAPXw8V+X1gg1+BSze4MWfTgMDethg@mail.gmail.com>
Accept-Language: es-ES, en-US
Content-Language: es-ES
x-ms-exchange-messagesentrepresentingtype: 1
x-tmn: [2GLxlZyl7GojNaC4V4qNi/aCtsv1CGzD]
x-ms-publictraffictype: Email
x-incomingheadercount: 45
x-eopattributedmessage: 0
x-ms-office365-filtering-correlation-id: f1f6af5e-4590-4829-6b06-08d7deec52e6
x-ms-traffictypediagnostic: HE1EUR01HT046:
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info:
 Ht+hB/So1cK2yQ+/+DPilPKVXQlLvULT0sIyb8h5y8pvlvgsUkJp6FNdKHi6dsIdwjQbwJWsyqhPehbh4NcPwXiso3fr2fvQvJLSbDk58/uni4D2NLkqpXR9GYARJIyLG403f3vUHBXkNQKcTGIoWPAThEf3r9HUTlfi73xP7T8eLgTWMVd1GmmwLtwF86jzKyHEWklDiW1vuTuYs3MYDrHCEfWonr2jxDyOGU+di4Q=
x-forefront-antispam-report:
 CIP:255.255.255.255;CTRY:;LANG:en;SCL:0;SRV:;IPV:NLI;SFV:NSPM;H:VI1PR08MB2813.eurprd08.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:;DIR:OUT;SFP:1901;
x-ms-exchange-antispam-messagedata:
 KeUD3KWcILIZOTFkx9NpqF+cVd8MnvWmI7UMFNOPnUMXd0BawEQPUJlRY0l8m0JYLf8nOhDflYeJrgOyiHiuQVrp91/cUKL3cJ4UxM6vUapPDa5HL/r5gHx7cKG+85sUe+aSMqfRFZOQ1Qg2ShtsmA==
x-ms-exchange-transport-forked: True
Content-Type: multipart/alternative;
	boundary="_000_VI1PR08MB2813283C5F26DB5432904A15B8DC0VI1PR08MB2813eurp_"
MIME-Version: 1.0
X-OriginatorOrg: hotmail.com
X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000
X-MS-Exchange-CrossTenant-Network-Message-Id: f1f6af5e-4590-4829-6b06-08d7deec52e6
X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 00000000-0000-0000-0000-000000000000
X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Apr 2020 14:18:08.0295
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Internet
X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa
X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1EUR01HT046
Subject: RE: [PHP-DEV] [DISCUSSION] Match expression
From: txigreman@hotmail.com (=?Windows-1252?Q?Iv=E1n_Arias?=)

--_000_VI1PR08MB2813283C5F26DB5432904A15B8DC0VI1PR08MB2813eurp_
Content-Type: text/plain; charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable

>> Would be posible for blocks to require a return statement instead of rai=
sing an error?
>
>It would be possible for the blocks to return values (though not with
>the return keyword). I've created a small prototype a few weeks ago:
>
>```
>$result =3D match ($x) {
>    0 =3D> {
>        echo 'Foo';
>        echo 'Bar';
>        'Baz'
>    },
>    ...
>};
>```
>
>https://github.com/php/php-src/compare/master...iluuu1994:block-expression
>Heavily inspired by Rust:
>https://doc.rust-lang.org/reference/expressions/block-expr.html
>
>While this would perfectly solve the problem perfectly it feels a
>little foreign in PHP. Either way, this is something that can be
>discussed an implemented in a separate RFC.

My only concern about blocks is that I fell a bit odd that they can only be=
 used
under some circustances. I think I would prefer to simply do not include th=
em
for now, and discuss these =93block expressions=94 in another RFC as they s=
eem to
be an independent language feature.

Regards,
Iv=E1n Arias.


--_000_VI1PR08MB2813283C5F26DB5432904A15B8DC0VI1PR08MB2813eurp_--