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Discover the benefits of removing dead code - improved maintainability, reduced risk of bugs, enhanced readability, and better performance.

Negatives are harder to understand. Conditional functions should be expressed as positives every time.

Discover the Liskov Substitution Principle (LSP) and its role in building reliable software. Guarantee seamless substitution of parent and child classes.

Learn about the Open-Closed Principle (OCP) and its benefits. Extend functionality without modifying code, ensuring maintainability and reusability.

Each class should have a single responsibility. That means that there should be only one reason to change it. This is one of the SOLID principles.