Class computer programming - Wikipedia.
Classes can be derived from one or more existing classes, thereby establishing a hierarchical relationship between the derived-from classes base classes, parent classes or superclasses and the derived class child class or subclass. The relationship of the derived class to the derived-from classes is commonly known as an is-a relationship.
Performing Arts School - Classes, Courses Lessons City Academy.
We hold classes at over 40 London locations, including many of the capitals leading arts venues. At our creative and performing arts school, all classes are taught by industry professionals and are designed to fit around your working life, with part-time evening, weekend, and daytime courses in a wide range of subjects.