if statement - How to compare one value against multiple values - Swift

Question

Let's say that you have the code

if stringValue == "ab" || stringValue == "bc" || stringValue == "cd" {
    // do something
}

Is there a way to shorten this condition or beautify it (preferably without using the switch statement)? I know that this code does NOT work:

if stringValue == ("ab" || "bc" || "cd") {
    // do something
}

I've seen some complex solutions on other languages, but they seem language specific and not applicable to Swift. Any solutions would be appreciated.

Answer 1

let valuesArray = ["ab","bc","cd"]

valuesArray.contains(str) // -> Bool