Swift: enum names with special characters (like .) in them

Question

how can I create an enum with "." or "-" in their names? I want something like:

 enum Options: String {
     case option1, option2, option2.1, option3
 }

Using backticks (``) doesn't work. Is there some work-around I can do?

You can't so use _ or some other approved character. Back ticks are to be used when you want an identifier name to be the same as a reserved word in swift like class or case or enum — Joakim Danielson, Dec 14 '20 at 14:13
@LeoDabus, maybe a misunderstanding. My "can't" refers to the first sentence in the question and not the last. If that's not it then please explain how I am wrong. — Joakim Danielson, Dec 14 '20 at 16:29
sorry I missed the "so" word there. A punctuation there would help reading it correctly — Leo Dabus, Dec 14 '20 at 16:32

score 0 · Answer 1 · answered Dec 14 '20 at 14:10

0

Neither character can be part of an identifier name. See https://docs.swift.org/swift-book/ReferenceManual/LexicalStructure.html for the grammar.

answered Dec 14 '20 at 14:10

Gereon

score 0 · Answer 2 · answered Dec 14 '20 at 16:34

0

Like Gereon says, basically, you can't. It is a very archaic system. But if you can find a good emoji you like, that'll work.

enum Option: String {
  case option1, option2, option21, option3
}

Also, note that each one is an Option, not an Options.

answered Dec 14 '20 at 16:34

IMO it would be better to use something like option2a – Leo Dabus Dec 14 '20 at 16:38
I hate underscores, but I still use a lot of them because I think they’re the best substitute for periods. e.g. https://developer.apple.com/documentation/metal/mtlfeatureset – Dec 14 '20 at 17:03

2 Answers2