Open–closed principle

The Open–Closed Principle (OCP) is one of the five SOLID principles of object-oriented design, which were introduced by Bertrand Meyer in 1988. The principle states that software entities (such as classes, modules, and functions) should be open for extension but closed for modification. Here's a breakdown of the key concepts: 1. **Open for Extension**: This means that the behavior of a module can be extended to accommodate new functionalities.