[Solved] Unexpected non-void return value in void function when returns an array

by


You can´t just return words in your closure. First of all it´s an async method second you need to return a value outside of the closure which will be called before the closure. You need to have a completionHandler instead of returning Array<Any>. In that case you can pass the value if and when it succeeds. Something like this:

func getWords(onCompletion: @escaping (Array<Any>) -> Void) {
    ref = Database.database().reference()
    ref.child("addedWords").observe(.value, with: { (DataSnapshot) in
        var tempWords = DataSnapshot.value as! [String:AnyObject]
        var words = Array(tempWords.keys)
        print(words)
        onCompletion(words)
    })
}

To call it:

getWords(onCompletion: { (words) in
    print(words)
})

solved Unexpected non-void return value in void function when returns an array