Learning Swift™ Programming

Associated Values

You will often want to associate a value with a member of an enum. Having the member itself is helpful, but sometimes you need more information. Here’s how you could create a Computer enum to get an idea of what I mean:

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enum Computer {    //ram and processor    case Desktop(Int,String)    //screen size, model    case Laptop(Int, String)    //screen size, model, weight    case Phone(Int, String, Double)    //screen size, model, weight    case Tablet(Int, String, Double)}var tech:Computer = .Desktop(8, "i5")

Here you have made a computer that is of type Computer, with a value of Desktop, with 8 GB of RAM and an i5 processor. Notice how you can give each member value different required associated values. ...