Can you provide examples of the Visitor pattern in C++ and Java?

Can you provide examples of the Visitor pattern in C++ and Java?

Sure! The Visitor pattern is a design pattern that lets you separate algorithms from the objects on which they operate. In C++, you might have a base class for elements and a visitor interface.

Can you show me a simple C++ example?

Absolutely! Here's a simple C++ example:

class Visitor;
class Element {
public:
    virtual void accept(Visitor& v) = 0;
};

class ConcreteElementA : public Element {
public:
    void accept(Visitor& v) override;
};

class Visitor {
public:
    virtual void visit(ConcreteElementA& element) = 0;
};

What about a Java example?

In Java, it looks similar. Here's a basic example:

interface Visitor {
    void visit(ConcreteElementA element);
}

abstract class Element {
    abstract void accept(Visitor v);
}

class ConcreteElementA extends Element {
    void accept(Visitor v) {
        v.visit(this);
    }
}
```},{