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Tue, 18 May 2021 00:46:41 +0000 Received: from DM6PR07MB6618.namprd07.prod.outlook.com ([fe80::20ed:6cd1:4fe2:eea7]) by DM6PR07MB6618.namprd07.prod.outlook.com ([fe80::20ed:6cd1:4fe2:eea7%3]) with mapi id 15.20.4129.032; Tue, 18 May 2021 00:46:41 +0000 To: "internals@lists.php.net" <internals@lists.php.net> Thread-Topic: [PHP-DEV] [RFC]: Allow static properties in enums Thread-Index: AQHXSyQDVDy99aZ9kUmonoEBFwdfBarnuCqAgAADjgCAABjeAIAAjcbT Date: Tue, 18 May 2021 00:46:40 +0000 Message-ID: <DM6PR07MB6618C7446A771452DEB9D5DCF92C9@DM6PR07MB6618.namprd07.prod.outlook.com> References: <DM6PR07MB6618AA302ABC6DC7A37B609BF92D9@DM6PR07MB6618.namprd07.prod.outlook.com> <CABdc3WpFk9qf10D=fEscB6LynmdN2_yFHW1b_Mz1m837=YOhTg@mail.gmail.com> <a8cca9f4-10c2-47ee-a6f9-c27e247d4734@www.fastmail.com>,<CABdc3WrYW9HQZ1D8F001HNCrY-UmFO2Z_+owMAYJk=mxzKjWTA@mail.gmail.com> In-Reply-To: <CABdc3WrYW9HQZ1D8F001HNCrY-UmFO2Z_+owMAYJk=mxzKjWTA@mail.gmail.com> Accept-Language: en-CA, en-US Content-Language: en-CA X-MS-Has-Attach: X-MS-TNEF-Correlator: x-incomingtopheadermarker: OriginalChecksum:262F5222C7858620AA3DF3772EC86DE8A8D56220F991183EF9A23C218239EAB5;UpperCasedChecksum:AA2F57EB072A2211BC003F7AD90AAF1BFA101B4CBE46BCB9022648D3D7AD18C8;SizeAsReceived:7267;Count:44 x-ms-exchange-messagesentrepresentingtype: 1 x-tmn: [3QdjjWjY1TNFu04+Sg3U653VEjr+CIIl/G27skHUPKWNGCq/DCl5aZiYA3XqXI80] x-ms-publictraffictype: Email x-incomingheadercount: 44 x-eopattributedmessage: 0 x-ms-office365-filtering-correlation-id: 78551cc4-c935-4cc2-30a9-08d9199666d2 x-ms-traffictypediagnostic: DM6NAM12HT127: x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: qJLElhne5+6bjjBdvuLzbpUHm0fKWpE5bu4vJeWOmTsfMWpOtAvz8JWaoJAAAE/7e6dy+3T8g+W2FgJXExlhQ5NsuvRaY27acHqJLTMiNDwo75/5bedqscXZXgW9r9/PZRLNivr1vVm2PeoVjNLEi2VpfOHULtCyThxk74jBIqRFDSYN9pK3wY20ueIN12CFk6fo4DAhhIgTKOCkkYmAGlpNLkhlOW1zcAuAEQrn2FIjctHSJnsjmbB+ieth5SPC6v+EsRew+K2vFGx/n59+Spjvab+XxleXxD9iHlc1RfRU7OSH/vuEqlo3rkUnk2G55MtyHNu3bkiGxmqonwZi4kRzy8Q24PmNJEmhiAWrVKauJMcsL2bQEoMjJ1/R/7WFE92WH0Bue2hfBe5vGOlfsb8y6VYF5CaoB874Fzo/Hu3AVvyVkChiwxO9QnrIiulRZOYcc4mHcrYvC5T+a8HQfA== x-ms-exchange-antispam-messagedata: WKEetvm9hpnPaM62BVu6SeMmYoLaE+FMXWpYVWIvqHCsZadR+etBShGV6+OmjqvMC77sJ1LCh2QpAuJuo+EioQ/XJdtPfh0hLFcoxfau66jsL/N5hGho5Qq9V7WvTH+SJIEZ9JKZG+jMDLL9UP8Ay1rPoPY0xoeJh4I6VTgroxeJwCj1OxSWV+mCwY7eHiKN2x4UdQ4XSI73PCxI0Xmigw== x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: hotmail.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-AuthSource: DM6NAM12FT004.eop-nam12.prod.protection.outlook.com X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-CrossTenant-Network-Message-Id: 78551cc4-c935-4cc2-30a9-08d9199666d2 X-MS-Exchange-CrossTenant-originalarrivaltime: 18 May 2021 00:46:40.9696 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Internet X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6NAM12HT127 Subject: Re: [PHP-DEV] [RFC]: Allow static properties in enums From: tysonandre775@hotmail.com (tyson andre) > > On Mon, May 17, 2021, at 9:16 AM, Micha=B3 Marcin Brzuchalski wrote:=0A= > > > pon., 17 maj 2021, 16:02 u=BFytkownik tyson andre <=0A= > > tysonandre775@hotmail.com>=0A= > > > napisa=B3:=0A= > > >=0A= > > > > Hi internals,=0A= > > > >=0A= > > > > I've created a new RFC=0A= > > > > https://wiki.php.net/rfc/enum_allow_static_properties=0A= > > > >=0A= > > > > Although enums are immutable objects, it is often useful to have=0A= > > functions=0A= > > > > or methods that operate on enum instances.=0A= > > > > In many cases, it would make sense to declare that functionality as= =0A= > > static=0A= > > > > methods on the enum itself.=0A= > > > > In cases where static methods require shared state, it would be use= ful=0A= > > to=0A= > > > > allow storing those shared state in static properties.=0A= > > > > To ensure immutability of enum instances, it's only necessary to fo= rbid=0A= > > > > instance properties, but all properties were forbidden in the initi= al=0A= > > > > functionality included with the enums RFC.=0A= > > > >=0A= > > > > This RFC proposes allowing static properties in enums, while=0A= > > continuing to=0A= > > > > forbid instance properties.=0A= > > > >=0A= > > >=0A= > > > Would you be able to provide more real life example?=0A= > > > The example in RFC could easily encapsulate current Environment readi= ng=0A= > > in=0A= > > > for eg. EnvironmentConfiguration class with static property and metho= d=0A= > > and=0A= > > > TBH possibly that would be my preference to solve this.=0A= > >=0A= > > I would agree.=A0 Static properties are ugly to begin with.=A0 They're = globals=0A= > > with extra syntax.=A0 I have no desire to see them on enums.=0A= > >=0A= > > Also a clarification, since it wasn't entirely clear in Tyson's origina= l=0A= > > email: Static methods on Enums *are already supported*.=A0 They were in= cluded=0A= > > in the original Enum RFC.=A0 The change proposed here is just about sta= tic=0A= > > properties.=0A= > >=0A= > =0A= > Personally, I'd prefer to see enums as value objects only, adding static= =0A= > properties allow to implementation of statically conditional behaviour.= =0A= > IMO enums should consist only of pure functions. This is why I'd vote NO = on=0A= > this proposal.=0A= > =0A= > Cheers,=0A= > Micha=B3 Marcin Brzuchalski=0A= =0A= Hi internals,=0A= =0A= I've updated https://wiki.php.net/rfc/enum_allow_static_properties to inclu= de the arguments made so far against/for including=0A= static properties, as well as including more arguments/examples in favor of= including static properties in traits.=0A= =0A= Thanks,=0A= - Tyson=0A=