Dec 4, 2020 7:37:51 PM Paul Crovella <paul.crove...@gmail.com>:
> On Fri, Dec 4, 2020 at 3:25 PM Larry Garfield <la...@garfieldtech.com> wrote: >> >> Greetings, denizens of Internals! >> >> Ilija Tovilo and I have been working for the last few months on adding >> support for enumerations and algebraic data types to PHP. This is a >> not-small task, so we've broken it up into several stages. The first stage, >> unit enumerations, are just about ready for public review and discussion. >> >> The overarching plan (for context, NOT the thing to comment on right now) is >> here: https://wiki.php.net/rfc/adts >> >> The first step, for unit enumerations, is here: >> >> https://wiki.php.net/rfc/enumerations >> >> There's still a few bits we're sorting out and the implementation is mostly >> done, but not 100% complete. Still, it's far enough along to start a >> discussion on and get broader feedback on the outstanding nits. >> >> I should note that while the design has been collaborative, credit for the >> implementation goes entirely to Ilija. Blame for any typos in the RFC >> itself go entirely to me. >> >> *dons flame-retardant suit* >> >> -- >> Larry Garfield >> la...@garfieldtech.com > > I'd like to see the specific reasons for the restrictions listed in > Comparison to objects[1]. In general if something's value is even > debatable then the default position should be to remain consistent > with the rest of the language. It should take a strong argument to > introduce any artificial limitation and it's useful to have that in > the RFC. > > [1] https://wiki.php.net/rfc/enumerations#comparison_to_objects > The reasoning general comes down to one of 2 things: * they involve state, and enum cases have no state. They may get reintroduced with tagged unions, but for now methods relating to state would just be confusing. * we couldn't figure out what possible use they'd have (like static methods on cases, which without data are exactly the same as normal methods.) --Larry Garfield -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: https://www.php.net/unsub.php
