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iOS Swift Enums and Structs Enums Enum Members and Raw Values

Posted by Bradley Jackson
Bradley Jackson
2,668 Points

Retrieving Enum Raw Value

Hello everyone,

I passed the task & understand the concept of:

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

var turtleSpeed = Speed.Slow.rawValue

But I am reading the documentation of Swift, and it states for the example:

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

let earthsOrder = Planet.Earth.toRaw() // earthsOrder is 3

So my question is: What does this "toRaw()" function do?

 var turtleSpeed = Speed.Slow.toRaw()

Any answer or elaboration would be great!

1 Answer

Ben Griffith
Ben Griffith
5,808 Points
Ben Griffith
Ben Griffith
5,808 Points

According to the changelog "fromRaw()/toRaw()" has been replaced by rawValue in Xcode 6.1

"Xcode produces fixit hints to move code from the old-style “fromRaw()/toRaw()” enum APIs to the new style-initializer and “rawValue” property. (18216832)"

https://developer.apple.com/library/ios/releasenotes/DeveloperTools/RN-Xcode/Chapters/Introduction.html

Bradley Jackson
Bradley Jackson
2,668 Points

Oh! That's pretty neat actually... Thanks for the help.