https://docs/oracle.com/javase/tutorial ... Types.htmlDuring the type erasure process, the Java compiler erases all type parameters and replaces each with its first bound if the type parameter is bounded, or Object if the type parameter is unbounded.
https://medium.com/@tjoye20/ruby-access ... 788b2604a7Protected methods: a protected method is similar to a private method, with the addition that it can be called with, or without, an explicit receiver, but that receiver is always self (it's defining class) or an object that inherits from self.
https://www.tutorialspoint.com/cplusplu ... ctions.htmA friend function of a class is defined outside that class' scope but it has the right to access all private and protected members of the class. Even though the prototypes for friend functions appear in the class definition, friends are not member functions.
