JavaScript Visitor Pattern

Description: The Visitor Pattern is a design pattern that allows separating algorithms from the objects they operate on, facilitating the addition of new operations without modifying existing data structures. This pattern is based on the idea that a new operation can be defined without changing the classes of the elements it operates on. Essentially, the Visitor pattern introduces a new object, known as a ‘visitor’, which contains the logic of the operation and is applied to the elements of an object structure. This allows for cleaner and more maintainable code, as it avoids the need to modify the element classes each time a new operation is added. Additionally, the Visitor pattern is particularly useful in situations where complex operations need to be performed on an object structure that may change frequently. By encapsulating the operation logic in a visitor, it promotes adherence to the single responsibility principle, resulting in a more modular and flexible design. In summary, the Visitor Pattern is a powerful tool in a developer’s arsenal, allowing for a clear separation between business logic and data structure, facilitating the evolution of software over time.

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