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iOS Swift 2.0 Enumerations and Optionals Introduction to Enumerations Enums with Associated Values

Paul Je
Paul Je
4,435 Points

How to declare type of value as string?

Unsure about where I can declare it as a string, thanks!

enums.swift
enum MobilePhone {
  case iPhone
  case Android
  case Blackberry
  case WindowsPhone
}

let iPhone -> String = "6S"

1 Answer

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,624 Points

Hey Paul,

Your enum syntax is correct, except you are missing the associated value of String. And your let declaration, you seemed to have strayed a bit.

First off, lets look at the enum. The syntax is correct, but after each member, is where you add the associated value. THis is done by just adding the parentheses with the type inside to each member. E.g. (String). This will give an associated value of String to each member.

Next, the challenge wants you to assign the associated value of "6S" to the iPhone member. It has to be accessed through the MobilePhone enum, however. This is done using dot notation.

I've included the corrected code below for your reference. Have a look, and I hope it'll make sense. :)

enum MobilePhone {
  case iPhone(String) 
  case Android(String)
  case Blackberry(String)
  case WindowsPhone(String)
}
let iPhone = MobilePhone.iPhone("6S")

Keep Coding! :dizzy: