Protocols & Extensions basics
Define protocols, make types conform, extend with default implementations, and understand static vs instance requirements.
Intro
Swift protocols define a contract of methods/properties. Types adopt protocols to gain shared behavior. Extensions add functionality or default implementations.
Define protocol
Declare a protocol with required methods or properties.
protocol Greetable {
func greet() -> String
}All lessons in this course
- Protocols & Extensions basics
- Protocol extensions vs type extensions
- Static vs instance requirements