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iOS Swift Enums and Structs Enums Enum Members and Raw Values

Posted by Zack Ross
Zack Ross
1,799 Points

Having a tough time with Task 2! I cant Unwrap the enum value

Can anyone help me with Task 2? I'm stuck

enum.swift 
enum Speed: Int {
    case Slow = 10, Medium = 50, Fast = 100
}

var turtleSpeed = Speed(rawValue: 10)

2 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points 
Speed(rawValue: 10)

is not the correct way to access the raw value of an enumeration member which is why it did not return an Int like the challenge was expecting.

according to the Swift eBook:

Access the raw value of an enumeration member with its rawValue property:

enum Planet: Int {
    case Mercury = 1, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
}

let earthsOrder = Planet.Earth.rawValue
// earthsOrder is 3

using the example above, we can access the rawValue of the Slow speed like so:

enum Speed: Int {
    case Slow = 10
    case Medium = 50
    case Fast = 100
}
var turtleSpeed = Speed.Slow.rawValue
Zack Ross
Zack Ross
1,799 Points
Zack Ross
Zack Ross
1,799 Points

cool yeah i realized my mistake and fixed it already. Thanks!!