SOLID

Five guidelines for maintainable object-oriented design.

Principles

• S — Single ResponsibilityReady
• O — Open / ClosedReady
• L — Liskov SubstitutionReady
• I — Interface SegregationReady
• D — Dependency InversionReady

Open / Closed

See the full lesson: Open/Closed Principle.

Liskov Substitution

See the full lesson: Liskov Substitution Principle.

Interface Segregation

See the full lesson: Interface Segregation Principle.

Dependency Inversion

See the full lesson: Dependency Inversion Principle.