Separating CamelCase string into space-separated words in Swift

extension String {
    func camelCaseToWords() -> String {
        return unicodeScalars.dropFirst().reduce(String(prefix(1))) {
            return CharacterSet.uppercaseLetters.contains($1)
                ? $0 + " " + String($1)
                : $0 + String($1)
        }
    }
}
print("ÄnotherCamelCaps".camelCaseToWords()) // Änother Camel Caps

May be helpful for someone 🙂