SOLID 💻

This project was created only to practice the SOLID principles!

Single Responsibility

• A class should have a single responsibility.

Open/Closed

• Classes should be open for extension, but closed for modification.

Liskov Substitution

• A derived class must be replaceable with its base class.

Interface Segregation

• Clients should not be forced to depend on methods that they do not use

Dependency Inversion

• High-level modules should not depend on low-level modules. Both should depend on the abstraction.

Features 📌

• Add and remove product to shopping cart;
• Calculate the total value and the discount;
• Show message to client;