Open-Closed Principle

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Open for extension, closed for modification. Software entities should allow their behavior to be extended without modifying their existing source code, typically achieved through abstraction and polymorphism.

Key Properties

• Extension Points
• Abstraction Layers
• Plugin Architecture

Related

• Strategy (pattern implementing OCP)
• Polymorphism (mechanism for OCP)
• Decorator (extends behavior without modification)

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solid ocp