Build CSV from Array of Strings in Swift in a single line of code

Question

I have an array of strings in swift and I thought I could do:

array.join(",") to return a comma separated list of the elements

The error I'm getting is: Array<String> not convertible to 'String'

How can I do this correctly in as little code as possible.

I can do it with a loop to build a string but I thought there was a simpler way to do this.

Answer 1

Given an array of strings:

var x = ["one", "two", "three"]

the correct syntax to join strings is:

Swift 1.2

",".join(x)

Swift 2.0

x.joinWithSeparator(",")

Answer 2

In Swift 2,

array.joinWithSeparator(",")

Answer 3

In Swift 4

let array:[String] = ["one", "two","three"]

array.joined(separator: " ")