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

Visitor design pattern, the concept, problem solution and use cases

Strategy design pattern, a behavioral design pattern that denote the functionality of a family of interchangeable classes to a interface, the context, with the helper objects, selects the appropriate implementation of the interface.

Strategy design pattern, the concept, use cases and difference with the state design pattern

Command is a behavioral design pattern that encapsulates a request as an object. This allows you to parameterize methods with different requests, delay or queue a request’s execution, and support undoable operations. This pattern promotes the decoupling of the sender and receiver of a request, enhancing flexibility and maintainability.

Command Pattern

The State Design Pattern is a behavioral design pattern that allows an object to change its behavior when its internal state changes. This pattern is particularly useful for scenarios where an object can exist in multiple states and its behavior varies based on these states.

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