SOLID

• SRP Single Responsibility Principle : A class should have one reason to change
• OCP Open for extension, closed for modification
• LSP Liskov Substitution Principle enable to replace objects of a parent class with objects of subclass without breaking the application
• DIP Dependency Inverison Principle isolate the class from concrete implementation and having them depend on an abstract classes or interfaces.
• ISP Interface Segregation Principle : Splitting methods of a contract into groups of responsability and assigning interface to these groups. "# SOLID"