What Is Open/Close?
Open/Close is a software engineering principle that states that code should be open for extension but closed for modification. This means that the source code of an application should be designed in such a way that it can easily be extended to add new features or functionality without having to modify existing code. The idea behind this principle is to make applications more maintainable and extensible, while also reducing the risk of introducing bugs when making changes.
The Open/Close Principle helps developers create flexible systems by allowing them to extend existing functionality without changing its underlying implementation. It encourages developers to think about how their system will evolve over time and design it accordingly so they don’t have to constantly rewrite large portions of their codebase as requirements change. By following this principle, developers are able to keep their applications up-to-date with minimal effort and cost while still providing users with the latest features and capabilities they need.