abstract vs virtual

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C + + virtual functions & pure virtual Functions & Abstract classes & interfaces & virtual base classes (GO)

Http://www.cnblogs.com/fly1988happy/archive/2012/09/25/2701237.html1. polymorphicIn object-oriented languages, many different implementations of interfaces are polymorphic. Polymorphism refers to an instance (object) of a child class with a pointer

C + + virtual function virtual, pure virtual function abstract and Java abstraction function, interface interface and abstract class comparison

Because both C + + and Java are object-oriented programming languages, their polymorphism is achieved by virtual functions and abstract functions, respectively.The virtual function of C + + can be overridden in subclasses, and the invocation is

C # in abstract and virtual[reprint]

Original: http://www.cnblogs.com/blsong/archive/2010/08/12/1798064.htmlIn C # Learning, it is easy to confuse the use of virtual and abstract methods, now to discuss the difference between the two. Both involve the use of a mate with override in a

Abstract and virtual in C #

In C # Learning, it is easy to confuse the use of virtual and abstract methods, now to discuss the difference between the two. Both involve the use of a mate with override in a derived class.First, virtual method (virtual method)The virtual keyword

Abstract and virtual in C #

Http://www.cnblogs.com/blsong/archive/2010/08/12/1798064.htmlIn C # Learning, it is easy to confuse the use of virtual and abstract methods, now to discuss the difference between the two. Both involve the use of a mate with override in a derived

Introduction to interface abstract and virtual in C #

Abstract and Virtual: method overrides use the Override keyword, both the method in interface and the abstract method require implementationInterface used to declare an interface1. Only some method specifications are provided, and no method body is

Similarities and differences of abstract classes and interfaces in C #

Abstract classYou can declare a class as an abstract class by placing the keyword abstract before the class definition. Abstract classes cannot be instantiated. The purpose of an abstract class is to provide a generic base class definition that can

Abstract classes and interfaces in. Net

Learning Design Patterns When a lot of use of abstract classes and interfaces, used to feel they are a bit similar, but also a bit confused, in the end interface and abstract class what is the difference? Today I tried to get them to unravel the

C # in abstract and Virtua notes, knowledge

In C # Learning, it is easy to confuse the use of virtual and abstract methods, now to discuss the difference between the two. Both involve the use of a mate with override in a derived class.First, virtual method (virtual method)The virtual keyword

Class object and class pointer _ virtual function and polymorphic __ function

base class Class Shape {public : shape () { cout Sub Class Class Circle:public Shape {public : Circle () { cout class object vs class Pointer object of the class: Circle Circle;a pointer to a class: circle* p_circle =

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