Class (computer programming)

in object-oriented programming, a definition that specifies how an object works

type of data structure

inheritance with more than one parent class

C++ mechanism that exposes information about an object's data type at runtime

In object-oriented programming, a metaclass is a class whose syntactic definitions are used for the syntactic definition of the classes themselves. Unlike ordinary classes, which define the behaviors of objects, metaclasses specify the behaviors of classes and their instances. Not all object-oriented programming languages support the concept of metaclasses. For those that do, the extent of control metaclasses have over class behaviors varies. Metaclasses are often implemented by treating classes as first-class citizens, making a metaclass an object that creates and manages these classes. Each

in object-oriented programming, inheritance in which the superclass object is accessed through an additional layer of indirection, such that in diamond-shaped multiple inheritance, the common superclass appears only once

Object relationship in programming language

unchanging property for all objects of a class