How can i use string functions on an array of a string-backed enum?

Question

I'm trying to concatenate an array of string-backed enums into one single string. I have the following

enum MyEnumType1: String {
    case Foo = "foo"
    case Bar = "bar"
}

and this method to retrieve a string from an array of string-backed enums.

func getConcatenatedStringFromArray(array: [MyEnumType1]) -> String {
    return array.joinWithSeparator(",")
}

I get a compile error stating an Ambiguous reference to it's member "joinWithSeparator". How what am i doing wrong?

mixel · Accepted Answer · 2015-09-28 19:39:58Z

2

You should map your array to array of strings:

func getConcatenatedStringFromArray(array: [MyEnumType1]) -> String {
    return array.map { $0.rawValue }.joinWithSeparator(",")
}

answered Sep 28, 2015 at 19:39

mixel

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