Polymorphism in Swift allows objects of different types to be treated through a common interface, enabling flexible and reusable code. Compile-time polymorphism is achieved through method overloading, where multiple methods with the same name but different parameters can coexist within a class, and operator overloading, which allows custom behavior for operators with user-defined types. Runtime polymorphism is facilitated through method overriding, where a subclass can provide a specific implementation of a method already defined in its superclass, and protocol conformance, where different types can implement the same protocol and be used interchangeably. This flexibility promotes code that can handle various data types and structures in a unified way.
Method Overloading: In Swift, you can define multiple methods with the same name but different parameter lists in the same class or struct. This is known as method overloading.