Require for feedback: Explicit private attribute (2nd)

I spend about one year to make private_attribute implemented in c++. The new project is private_attribute_cpp. According to last discussion and actual experience, I changed some rule for private_attribute: Subclases cannot visit parent classes’ private attributes. If one subclass declared one private name that on parent class had declared, for instance, visiting this name attribute from parent or child classes would be independent (you might get different values with same attribute name from ...