What is a node class

  1. What is a node class? A node class is a class that,
    • relies on the base class for services and implementation,
    • provides a wider interface to the users than its base class,
    • relies primarily on virtual functions in its public interface
    • depends on all its direct and indirect base class
    • can be understood only in the context of the base class
    • can be used as base for further derivation
    • can be used to create objects.
    A node class is a class that has added new services or functionality beyond the services inherited from its base class.

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