问在Swift中确定字符串是否包含集合中的字符的最佳方法是什么

EN

extension String{
    var isContainsLetters : Bool{
        let letters = CharacterSet.letters
        return self.rangeOfCharacter(from: letters) != nil
    }
}

"123".isContainsLetters // false

func isAnyCharacter( from charSetString: String, containedIn string: String ) -> Bool
{
    return Set( charSetString.characters ).isDisjointWith( Set( string.characters) ) == false
}

let myString = "Some Words"

if myString.contains("Some"){
    print("myString contains the word `Some`")
}else{
    print("myString does NOT contain the word `Some`")
}

let myString = "Some Words"

if (myString.range(of: "Some") != nil){
    print("myString contains the word `Some`")
}else{
    print("Word does not contain `Some`")
}