senioriOS
What are SOLID principles in iOS development?
Updated May 6, 2026
Short answer
SOLID principles are five design guidelines for writing maintainable and scalable code.
Deep explanation
SOLID includes Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion. In iOS, they help structure ViewModels, services, and controllers to reduce coupling and improve testability.
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