Visitor pattern accept

Visitor design pattern is one of the behavioral design patterns . It is used when we have to perform an operation on a group of similar kind of Objects. With the help of visitor pattern, we can move the operational logic from the objects to another class.

Visitor is a behavioral design pattern that lets you separate algorithms from the objects on which they operate.

The Visitor pattern represents an operation to be performed on the elements of an object structure without changing the classes on which it operates . This pattern can be observed in the operation of a taxi company. When a person calls a taxi company (accepting a visitor), the company dispatches a cab to the customer.

There are at least three very good reasons for using the Visitor Pattern: Reduce proliferation of code which is only slightly different when data structures change. Apply the same computation to several data structures, without changing the code which implements the computation.