virtual constructor research

virtual constructor research

1. Advanced C++ | Virtual Constructor

Can we make a class constructor virtual in C++ to create polymorphic objects? No. C++ being statically typed (the purpose of RTTI is different) language, it is meaningless to the C++ compiler to create an object polymorphically. The compiler must be aware of the class type to create the object. In other words, what type of object to be created is a compile-time decision from the C++ compiler perspective. If we make constructor virtual, compiler flags an error. In fact, except inline, no other keyword is allowed in the declaration of the constructor.

In practical scenarios, we would need to create a derived class object in a class hierarchy based on some input. Putting in other words, object creation and object type are tightly coupled which forces modifications to extended. The objective of the virtual constructor is to decouple object creation from its type.

2. Advanced C++ | Virtual Copy Constructor

This is a paragraph.

3. Advanced C++ | Virtual Constructor

This is a paragraph.

4. Copy constructor vs assignment operator in C++

This is a paragraph.

5. When is copy constructor called?

This is a paragraph.

6. When should we write our own copy constructor?

This is a paragraph.

7. Why copy constructor argument should be const in C++?

This is a paragraph.

8. Copy Constructor in C++

This is a paragraph.

9. Calling virtual methods in constructor/destructor in C++

This is a paragraph.

10. Different methods to copy in C++ STL | std::copy(), copy_n(), copy_if(), copy_backward()
11. Shallow Copy and Deep Copy in C++

This is a paragraph.

12. What happens when a virtual function is called inside a non-virtual function in C++
13. Difference between Virtual function and Pure virtual function in C++

This is a paragraph.

14. Advanced C++ | Conversion Operators

This is a paragraph.

15. Does C++ compiler create default constructor when we write our own?

In C++, compiler by default creates default constructor for every class. But, if we define our own constructor, compiler doesn’t create the default constructor..

16. What is conversion constructor in C++?

In C++, if a class has a constructor which can be called with a single argument, then this constructor becomes conversion constructor because such a constructor allows automatic conversion to the class being constructed..

17. Type Conversion in C++

A type cast is basically a conversion from one type to another. There are two types of type conversion: .

18. Use of explicit keyword in C++

This is a paragraph.

This is a paragraph.

This is a paragraph.