How does Swift handle method dispatch?

Swift uses different method dispatch mechanisms for performance and flexibility.\n\n• **Static Dispatch:**\n• Compile-time method resolution\n• Fastest performance\n• Used for structs, final classes, private methods\n\n\nstruct Point { \n func distance() -> Double { // Static dispatch\n return sqrt(x*x + y*y)\n }\n}\n\nfinal class FinalClass { \n func method() {} // Static dispatch\n}\n\n\n• **Dynamic Dispatch (V-Table):**\n• Runtime method resolution using virtual table\n• Enables polymorphism\n• Used for class methods by default\n\n\nclass Animal { \n func makeSound() { // Dynamic dispatch\n print("Some sound")\n }\n}\n\nclass Dog: Animal {\n func makeSound() {\n print("Woof")\n }\n}\n\n\n• **Message Dispatch:**\n• Objective-C runtime dispatch\n• Most flexible but slowest\n• Used with @objc methods\n\n\nclass MyClass: NSObject {\n @objc func dynamicMethod() { // Message dispatch\n print("Dynamic")\n }\n}\n\n\n• **Performance Order:**\n1. Static (fastest)\n2. V-Table dynamic\n3. Message dispatch (slowest)\n\n• **Optimization Tips:**\n• Use final for classes that won't be subclassed\n• Use private for methods not accessed externally\n• Prefer structs when inheritance isn't needed