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What is an inherited class called?
An inherited class is called a subclass of its parent class or super class.
What is inherited into the child class?
Inheritance is the procedure in which one class inherits the attributes and methods of another class. And the class that inherits the properties from the parent class is the Child class. The interesting thing is, along with the inherited properties and methods, a child class can have its own properties and methods.
Which members are inherited by derived classes?
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. A derived class can have only one direct base class.
What are the protected members inheritance?
Protected Inheritance − When deriving from a protected base class, public and protected members of the base class become protected members of the derived class. Private Inheritance − When deriving from a private base class, public and protected members of the base class become private members of the derived class.
Which members of a class Cannot be inherited?
Explanation: Private members of a class can’t be inherited. These members can only be accessible from members of its own class only. It is used to secure the data. 4.
How does the originator access the memento class?
In this implementation, the memento class is nested inside the originator. This lets the originator access the fields and methods of the memento, even though they’re declared private. On the other hand, the caretaker has very limited access to the memento’s fields and methods, which lets it store mementos in a stack but not tamper with their state.
How is the memento pattern used in the editor class?
Hence, instead of other objects trying to copy the editor’s state from the “outside,” the editor class itself can make the snapshot since it has full access to its own state. The pattern suggests storing the copy of the object’s state in a special object called memento.
How is the memento an immutable value object?
The Memento is a value object that acts as a snapshot of the originator’s state. It’s a common practice to make the memento immutable and pass it the data only once, via the constructor. The Caretaker knows not only “when” and “why” to capture the originator’s state, but also when the state should be restored.
How are originators and caretakers of mementos different?
The originator has full access to the memento, whereas the caretaker can only access the metadata. Such a restrictive policy lets you store mementos inside other objects, usually called caretakers. Since the caretaker works with the memento only via the limited interface, it’s not able to tamper with the state stored inside the memento.