Swift Polymorphism
Swift Polymorphism
Treat related types uniformly via inheritance or protocol conformance.
Override methods and rely on dynamic dispatch.
Basic Polymorphism
Use inheritance to treat related types uniformly.
Example
class Animal { func speak() { print("...") } }
class Dog: Animal { override func speak() { print("Woof") } }
class Cat: Animal { override func speak() { print("Meow") } }
let animals: [Animal] = [Dog(), Cat()]
animals.forEach { $0.speak() }Protocol Polymorphism
Use a protocol to treat unrelated types uniformly.
Example
protocol Speaker { func speak() }
struct Dog: Speaker { func speak() { print("Woof") } }
struct Cat: Speaker { func speak() { print("Meow") } }
let speakers: [Speaker] = [Dog(), Cat()]
speakers.forEach { $0.speak() }
