solid.md

S.O.L.I.D. Design Principles

Single Responsibility Principle

A class should have only one responsibility, only one reason to change.

Open/Close Principle

A class should be open to extension but closed to modification (barring bug fixes).

Liskov Substitution Principle

Derived classes must be substitutable for their base classes. If your derived class has an empty or throw-only override method from the interface, there is something wrong with the interface.

Interface Segregation Principle

Prefer many fine-grained interfaces for specific roles rather than a few monolithic interfaces.

Dependency Inversion Principle

Depend on interfaces/abstractions and not on concrete classes.