RegEx to include alphanumeric and special characters

Since I do not know how many special characters exist, it is difficult to verify that the string contains a special character in the white list. Perhaps checking the string containing only the alphabet or numbers is more efficient.

for example kotlin

fun String.hasOnlyAlphabetOrNumber(): Boolean {
    val p = Pattern.compile("[^a-zA-Z0-9]")
    if (p.matcher(this).matches()) return false
    return true
}

for swift4

func hasOnlyAlphabetOrNumber() -> Bool {
    if self.isEmpty { return false }
    do {
        let pattern = "[^a-zA-Z0-9]"
        let regex = try NSRegularExpression(pattern: pattern, options: .caseInsensitive)
        return regex.matches(in: self, options: [], range: NSRange(location: 0, length: self.count)).count == 0
    } catch {
        return false
    }
}