Searching for Why C Does Not Support Virtual Constructor information? Find all needed info by using official links provided below.
https://stackoverflow.com/questions/733360/why-do-we-not-have-a-virtual-constructor-in-c
And another reason is, the constructors have the same name as its class name and if we declare constructor as virtual, then it should be redefined in its derived class with the same name, but you can not have the same name of two classes. So it is not possible to have a virtual constructor.
http://www.geekinterview.com/question_details/36942
if you think logically about how constructors work and what the meaning/usage of a virtual function is in C++ then you will realise that a virtual constructor would be meaningless in C++.Declaring something virtual in C++ means that it can be overridden by a sub-class of the current class, however the constructor is called when the objected is created, at that time you can not be creating a ...
https://social.msdn.microsoft.com/Forums/en-US/de63f0f3-f926-4dbf-9fdd-81d4417631a4/why-there-is-no-virtual-constructor-and-destructor-in-c
Hi, Why there is no virtual constructor and destructor in C#? Can anybody explain me.... I know this is fundamental question and everybody should know this.....but while reading C# book, I was wondering why not? · Constructors do not behave like methods. The CLR automatically calls the constructors of any base classes before invoking the class ...
https://www.codeproject.com/questions/119131/why-virtual-constructor-does-not-exist
So C++ does support virtual constructors, just not directly and only in the cases where the type of the object being constructed can be decoupled from the thing doing the construction. This technique works because objects always know their own class even if they can't tell anyone else what it …
http://www.cs.technion.ac.il/users/yechiel/c++-faq/virtual-ctors.html
[20.8] What is a "virtual constructor"? An idiom that allows you to do something that C++ doesn't directly support. You can get the effect of a virtual constructor by a virtual clone() member function (for copy constructing), or a virtual create() member function (for the default constructor ).
https://en.wikibooks.org/wiki/More_C%2B%2B_Idioms/Virtual_Constructor
C++ natively supports polymorphic destruction of objects using a virtual destructor. An equivalent support for creation and copying of objects is missing. In C++, creation of object(s) always requires its type to be known at compile-time. The Virtual Constructor idiom allows polymorphic creation of and copying of objects in C++.
https://www.quora.com/Why-Destructors-in-C++-can-be-virtual-but-constructors-cannot-be-virtual
Feb 09, 2017 · Virtual functions are used to implement polymorphic behaviour. It is used to call a function based on the type of object pointed by the pointer variable instead of the type of the pointer variable. Thus, “VIRTUAL” keyword allows us to call functio...
https://www.quora.com/Why-do-we-need-constructors-in-c++
Feb 19, 2018 · Hi, before we go on to understand why we need constructors, maybe you can have a look at what constructors are : answer to What is the definition of constructed in C++? Now coming to why we need constructors : We don’t necessarily NEED constructor...
https://www.geeksforgeeks.org/advanced-c-virtual-constructor/
Oct 25, 2011 · Consumers of User need not recompile their code due to extension of Base. Note that the function Create used to return different types of Base class objects at runtime. It acts like virtual constructor, also referred as Factory Method in pattern terminology. Pattern world demonstrate different ways to implement the above concept.4.2/5
https://www.go4expert.com/forums/virtual-constructor-cpp-t23033/
Aug 18, 2010 · You can have a virtual destructor because the object exists. This has nothing to do with whether or not you can get a pointer to a function. But to answer your question I will need to step back a bit and explain what virtual functions do. The point of virtual functions is to make polymorphism work.
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