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What is base class in inheritance?
Inheritance enables you to create new classes that reuse, extend, and modify the behavior defined in other classes. The class whose members are inherited is called the base class, and the class that inherits those members is called the derived class.
What is virtual base class with example?
Virtual base classes are used in virtual inheritance in a way of preventing multiple “instances” of a given class appearing in an inheritance hierarchy when using multiple inheritances. Need for Virtual Base Classes: Consider the situation where we have one class A .
Is every class a subclass of object?
In the absence of any other explicit superclass, every class is implicitly a subclass of Object . Classes can be derived from classes that are derived from classes that are derived from classes, and so on, and ultimately derived from the topmost class, Object .
Should I call base class constructor?
You always need to call the base class constructor to initialze base class subobjects. We usually call the base class constructor on derived class’s member initialization list.
When to call a method on a base class?
Call a method on the base class that has been overridden by another method. Specify which base-class constructor should be called when creating instances of the derived class. A base class access is permitted only in a constructor, an instance method, or an instance property accessor.
Which is the base class that is accessed?
The base class that is accessed is the base class specified in the class declaration. For example, if you specify class ClassB : ClassA, the members of ClassA are accessed from ClassB, regardless of the base class of ClassA.
How do you dive into large code bases?
Approaches you might consider: Try to find out what the code is supposed to do, in business terms. Read all the documentation that exists, no matter how bad it is. Talk to anyone who might know something about the code. Step through the code in the debugger. Introduce small changes and see what breaks.
When to use the base keyword in a static method?
It is an error to use the base keyword from within a static method. The base class that is accessed is the base class specified in the class declaration. For example, if you specify class ClassB : ClassA, the members of ClassA are accessed from ClassB, regardless of the base class of ClassA.