CODEWITHSUNDEEP
swiftenumscase
OxfordSi
OxfordSi

Reputation: 177

Call Swift enum case within same enum function

I'm trying to get my head around Swift enums and in doing so have taken myself off a tutorial track by trying to return a string from a function within the same enum...

enum topFiveBands: Int {
    case led_zeppilin = 1, queen, rush, pink_floyd, acdc

    func printRating() {
        print("The band \(???) has been ranked no.\(self.rawValue) of all time")
    }
}

var myFavBand = topFiveBands.acdc
myFavBand.printRating()

My code starts with a implicit assignment which lists the top 5 bands of all time (some of you may disagree with me on this..). Within the same enum I have a function which will print:

The band \(???) has been ranked no.\(self.rawValue) of all time

I've chosen .acdc so I'm looking for the function to return:

The band acdc has been ranked no.5 of all time

Whilst I can pull the rawValue (5) I can't seem to find a way to get the acdc into the string.

Upvotes: 0

Views: 423

Answers (2)

EmilioPelaez
EmilioPelaez

Reputation: 19884

While you can use self, I would advise against it because with enum names you have limitations, like having to use pink_floyd.

Instead I would recommend adding a String property that returns a display name depending on the value of the enum

var displayName: String {
    switch self {
    case .pink_floyd: return "Pink Floyd"
    case ...: // The rest
    }
}

func printRating() {
    print("The band \(displayName) has been ranked no.\(rawValue) of all time")
}

Upvotes: 0

pawello2222
pawello2222

Reputation: 54466

Just use self:

func printRating() {
    print("The band \(self) has been ranked no.\(self.rawValue) of all time")
}

The self is the reference to its own value which is acdc in this case.

Upvotes: 1

Related Questions