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iOS Swift Enums and Structs Enums and their Methods Initializer

Posted by Evan Yates
Evan Yates
1,517 Points

When I return Day.Saturday.rawValue - self.rawValue, xCode says that Day does not have a member named rawValue. Why?

enum Day { case Monday = 1, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday init() { self = .Monday }

func daysTillWeekend() -> Int {
    return Day.Saturday.rawValue - self.rawValue
}

}

4 Answers

kjvswift93
kjvswift93
13,515 Points
kjvswift93
kjvswift93
13,515 Points

The enum case can't have a raw value if you don't specify the enum's "raw" type (Int). So just write : Int after enum Day. 

enum Day: Int {
    case Monday = 1, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday

    func daysTillWeekend() -> Int {
        return Day.Saturday.rawValue - self.rawValue

    }

}
Oliver Pinchbeck
Oliver Pinchbeck
2,732 Points
Oliver Pinchbeck
Oliver Pinchbeck
2,732 Points

And check you're on a recent enough version of Xcode. Rawvalue doesn't exist in Xcode 6.0 according to this: https://teamtreehouse.com/forum/rawvalue-nonexistent-in-version-60-fromraw-and-toraw-are-similar

Amarie Darvai
Amarie Darvai
1,652 Points
Amarie Darvai
Amarie Darvai
1,652 Points

I am using 6.2 and got the same error with the same code. After some sleuthing, I deleted the last line of code

today.rawValue

and just retyped it in, but only with first letters, and using the TAB button to let Swift fill in the rest. For some strange reason that I have yet to uncover... it worked. No more error. No idea why... if I figure it out, I'll repost. :)

Sreenivasa Madenahally
Sreenivasa Madenahally
1,072 Points
Sreenivasa Madenahally
Sreenivasa Madenahally
1,072 Points

you have to specify the type of the raw value which for your case in integer. So instead of just typing enum Day type enum Day: Int