Exploring protocols

Protocols are like blueprints that determine what properties or methods an object must have. After you've declared a protocol, classes, structures, and enumerations can adopt this protocol and provide their own implementation for the required properties and methods.

Here's what a protocol declaration looks like:

protocol ProtocolName {
  var readWriteProperty1 {get set}
  var readOnlyProperty2 {get}
  func methodName1()
  func methodName2()
}

Just like classes and structures, protocol names start with an uppercase letter. Properties are declared using the var keyword. You use {get set} if you want a property that can be read from or written to, and {get} if you want a read-only property. Note that you just specify property and method names; the implementation is done within the adopting class, structure, or enumeration.

For more information on protocols, visit: https://docs.swift.org/swift...