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The Open-Closed Principle

The Open-Closed Principle is a principle of object-oriented software design that states that a class should be open for extension, but closed for modification. This means that the class should be designed in a way that allows it to be extended or modified to meet new requirements, without requiring changes to the class itself.

Here are some key points to consider when implementing the Open-Closed Principle:

  • Design for extensibility: The class should be designed in a way that allows it to be easily extended to meet new requirements, without requiring changes to the class itself. This may involve the use of inheritance, polymorphism, or other design patterns.
  • Avoid making changes to existing code: The class should be "closed" in the sense that it should not require changes to its existing code in order to meet new requirements. This helps to prevent the risk of introducing new bugs or breaking existing functionality when making changes to the class.
  • Use abstraction: Abstraction can help to decouple the class from the specific implementation details, allowing it to be extended or modified without requiring changes to the class itself.
  • Use separation of concerns: Separating different concerns, such as the interface and the implementation, can help to make the class more flexible and easier to extend.

Overall, adhering to the Open-Closed Principle can help to make your object-oriented software more maintainable and flexible, as it allows you to make changes and add new functionality without requiring changes to the existing code.

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