Learning Swift™ Programming

Enums

Enums, structs, classes, and protocols are all written in a very similar way. Here is how you create an enum for the suits in a deck of cards:

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enum Suit {    //... enum implementation goes here}

You should choose a singular name (not plural) for the enum—like Suit in this case. You write the word enum and then give the enum a name and write a pair of curly brackets. The enum implementation goes inside the curly brackets. Here is a simple enum that declares all possible suits in a deck of cards:

enum Suit {    case Hearts    case Clubs    case Diamonds    case Spades}

Now you can declare Suit.Clubs:

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var thisCardSuit = Suit.Clubs

Now thisCardSuit is of type Suit. Each one of the ...