Swift, Solid Principles In Swift, Easy, Dependency Injection, Swift Programming.
flying } } class Ostrich: Bird { override func fly() { fatalError("Ostriches can't fly") } } // Good design protocol Bird { func fly() } class Sparrow: Bird { func fly() { // logic for flying } } class Ostrich: Bird { func fly() { fatalError("Ostriches can't fly") } } In the bad design example, the