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I have user array and I want concat values with ','

for s in userArray {

}

I want the result be A,B,C,D

How could I do this in Swift 3?

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    Why use a loop? Use the joined function. Commented Feb 20, 2017 at 17:04

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Use the array joined(separator:) function

let joined = stringArray.joined(separator: ", ")
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2 Comments

what if it's not a stringArray? it's userList I want concat user emails
let joined = userArray.map { $0.email }.joined(separator: ",")

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