Explain the Open/Closed Principle (OCP). How do you achieve it without modifying existing code?

Difficulty: 5/10

extensibility, polymorphism, design patterns

Open/Closed Principle

The Open/Closed Principle says software entities should be open for extension but closed for modification. In practice, I achieve this by identifying stable abstractions and introducing polymorphism, strategies, factories, plugins or configuration-driven behavior. The goal is not literally to never modify existing code; rather, frequently changing requirements should ideally be accommodated through new implementations instead of repeatedly editing stable, tested logic.

javascript

1
Use abstractions at points where behavior is expected to vary.
2
Use polymorphism instead of large conditional chains.
3

Explain the Open/Closed Principle (OCP). How do you achieve it without modifying existing code?

Difficulty: 5/10

extensibility, polymorphism, design patterns

Open/Closed Principle

javascript

1
Use abstractions at points where behavior is expected to vary.
2
Use polymorphism instead of large conditional chains.
3

Explain the Open/Closed Principle (OCP). How do you achieve it without modifying existing code?

Open/Closed Principle

Explain the Open/Closed Principle (OCP). How do you achieve it without modifying existing code?

Open/Closed Principle

Scenario Questions

Follow-up Questions