Protocol Example - 6 : Protocol as a super-type : Medium blog

ProtocolExample6.swift

import Foundation

//MARK:- InformationDisplayble Protocol
protocol InformationDisplayble {
    func displayInformation()
}

//MARK:- Employee Class
class Employee {
    var employeeID: String = "EMP007"
    var organizationName: String = "ISRO"
}//End: Employee

//MARK:- Employee extension
extension Employee: InformationDisplayble {
    func displayInformation() {
        print("Employee works in \(self.organizationName), employee ID is \(self.employeeID)")
    }
}


//MARK:- Student Class
class Student {
    var enrollmentNumber: String = "1153506930"
    var universityName: String = "GTU"
}//End: Student

//MARK:- Student extension
extension Student: InformationDisplayble {
    func displayInformation() {
        print("Student studied in \(self.universityName), entrollment number is \(self.enrollmentNumber)")
    }
}

//Global Function that can print information of InformationDisplayble
func displayInformation(of object: InformationDisplayble){
    object.displayInformation()
}

//creating instances | objects
let employee = Employee()
let student = Student()

//displaying created instances
displayInformation(of: employee)
displayInformation(of: student)