This article is about virtual classes. For virtual base classes, see Virtual inheritance. For pure virtual classes, see Abstract type. For internet-based teaching, see Virtual education.
In object-oriented programming, a virtual base class is a nested inner class whose functions and member variables can be overridden and redefined by subclasses of an outer class.[1] Virtual classes are analogous to virtual functions.
The run time type of a virtual class depends on the run time type of an object of the outer class. (Just like the run time type of an object decides which virtual function should be used.)
A run time instance type of the outer class object not only decides on the polymorphic type of its own type object, but also on a whole family tree of virtual class members.
a virtual base class is a nested inner class whose functions and member variables can be overridden and redefined by subclasses of an outer class. Virtual...
being overridden by derived classes (such as the final and private keywords in Java and PHP). The concept of the virtual function solves the following...
modalities include distance learning with complementary virtual environment or teaching in virtual environment (e-learning). Massive open online courses...
Virtual inheritance is a C++ technique that ensures only one copy of a base class's member variables are inherited by grandchild derived classes. Without...
the signal travels Virtual function, a programming function or method whose behaviour can be overridden within an inheriting class by a function with...
method binding). Whenever a class defines a virtual function (or method), most compilers add a hidden member variable to the class that points to an array...
C#. By including, in the class definition, one or more abstract methods (called pure virtual functions in C++), which the class is declared to accept as...
In mathematics, specifically enumerative geometry, the virtual fundamental class [ X ] E ∙ vir {\displaystyle [X]_{E^{\bullet }}^{\text{vir}}} of a space...
Virtual reality (VR) is a simulated experience that employs 3D near-eye displays and pose tracking to give the user an immersive feel of a virtual world...
extension class loader or application class loader. The Java virtual machine specification does not specify how a class loader should locate classes. The JVM...
An online school (virtual school, e-school, or cyber-school) teaches students entirely or primarily online or through the Internet. It has been defined...
needed] Called the virtualclass laboratory it used dedicated telecommunication systems to make it possible for students to attend class virtually or physically...
A virtual appliance is a pre-configured virtual machine image, ready to run on a hypervisor; virtual appliances are a subset of the broader class of software...
Outschool, Inc. is an American online marketplace of virtualclasses for children. It is headquartered in San Francisco, California. Outschool was co-founded...
A friend class or function that is virtual in programming A song from Armin van Buuren's album Mirage (2011) Friend (disambiguation) Virtual (disambiguation)...
A virtual assistant (VA) is a software agent that can perform a range of tasks or services for a user based on user input such as commands or questions...
x86 virtualization is the use of hardware-assisted virtualization capabilities on an x86/x86-64 CPU. In the late 1990s x86 virtualization was achieved...
A Java class file is a file (with the .class filename extension) containing Java bytecode that can be executed on the Java Virtual Machine (JVM). A Java...
IP over virtual circuits. Each circuit is identified by a label. MPLS is unreliable but provides eight different QoS classes. Switched virtual circuits...
A virtual keyboard is a software component that allows the input of characters without the need for physical keys. Interaction with a virtual keyboard...
five days of the week, and visit their local Kumon Center or attend a virtualclass the other two days.[non-primary source needed] Psychologist Kathy Hirsh-Pasek...
2020-03-13. "Automated Check Deposits | Earth Class Mail". www.earthclassmail.com. Retrieved 2021-10-20. "Virtual Mailbox: The Easy Way to Get Mail When You...
A virtual pet (also known as a digital pet, artificial pet, or pet-raising simulation) is a type of artificial human companion. They are usually kept...
functions virtualization (NFV) is a network architecture concept that leverages IT virtualization technologies to virtualize entire classes of network...
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