[SOLVED] Use reserved keyword a enum case

Use reserved keyword a enum case

Is it possible to use a reserved keyword as enum case?

For example:

enum MyEnum {
  case Self // compiler complains here
  case AnotherCase
}

In other languages this is possible by escaping the keyword in some ways, for instance in scala we use backticks, e.g.

`type`

can be used as identifier, despite type being a reserved keyword.

Is there anything similar in swift?

Solution

From the Swift Language Guide (Naming Constants & Variables section)

If you need to give a constant or variable the same name as a reserved Swift keyword, surround the keyword with back ticks (`) when using it as a name. However, avoid using keywords as names unless you have absolutely no choice.

enum MyEnum {
  case `self` // compiler does not complain anymore
  case anotherCase
}

and use it with or without backticks

let x: MyEnum = .self
let y = MyEnum.`self`