Compare enums with associated values in Swift

Question

For enums with associated values, Swift doesn\'t provide the equality operator. So I implemented one to be able to compare two enums:

enum ExampleEnum{
              


        

Answer 1

Currently there is no way of achieving this without writing out all the cases, we can hope that it'll be possible in a later version.

If you really have a lot of cases and you don't want to write them all out, you can write a small function that generates the code automatically for you (I've been doing this just recently for something that wasn't possible to refactor)

Answer 2

As of Swift 4.2 just add Equatable protocol conformance. It will be implemented automatically.

enum ExampleEquatableEnum: Equatable {
    case case1
    case case2(Int)
    case case3(String)
}

print("ExampleEquatableEnum.case2(2) == ExampleEquatableEnum.case2(2) is \(ExampleEquatableEnum.case2(2) == ExampleEquatableEnum.case2(2))")
print("ExampleEquatableEnum.case2(1) == ExampleEquatableEnum.case2(2) is \(ExampleEquatableEnum.case2(1) == ExampleEquatableEnum.case2(2))")

I.e. default comparison takes associated values in account.