seniorSwift
What is SOLID principle and how does it apply in Swift?
Updated May 17, 2026
Short answer
SOLID principles guide maintainable and scalable object-oriented design.
Deep explanation
In Swift, SOLID improves architecture: Single Responsibility ensures one job per type, Open/Closed uses protocols, Liskov ensures substitutability, Interface Segregation avoids fat protocols, Dependency Inversion uses abstractions.
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