Re: [RFC] [Under Discussion] Auto-implement Stringable for string backed enums

>> Symfony YAML has a !php/const X feature, which also works >> when X is >> an Enum::CASE; how about a !php/enum_value feature? > > I submitted something similar today at > https://github.com/symfony/symfony/pull/46771 And I see that it has been merged ;) >> Otherwise, I also like Rowan's suggestion of implementing "internal >> cast handlers", so that non-strict users could call e.g. > > I had a look at gmp for example: cast handlers don't work when calling a function. > They do work when explicit casting and when doing loose comparisons, but they don't when > calling functions Well it works for string at least (even though GMP does *not* implement __toString), e.g. https://3v4l.org/cRnnW The TypeError for int may be related to the fact that e.g. +$gmp (or 0 + $gmp) gives back a GMP (not an int like (int)$gmp)? (But indeed I don't know much about that... nor if it could be made opt-in) > Rowan's proposals about sets could solve this in a very nice way Reminded me of e.g. https://stackoverflow.com/questions/6422380/does-any-programming-language-support-defining-constraints-on-primitive-data-types (mainly integer ranges, but the concept of "domains" looks similar) Regards, -- Guilliam Xavier