List of class's properties

propertyNames.swift

func propertyNames(forClass: AnyClass) -> [String] {
    var count = UInt32()
    let properties = class_copyPropertyList(forClass, &count)
    let names: [String] = (0..<Int(count)).flatMap { i in
        let property: objc_property_t = properties[i]
        guard let name = NSString(UTF8String: property_getName(property)) as? String else {
            debugPrint("Couldn't unwrap property name for \(property)")
            return nil
        }
        return name
    }
    free(properties)
    return names
}