Could a User of an app create a new child class, instead of a class instance

12GreenTrees · July 3, 2025, 8:17pm

Thanks! Reading that article helped a lot!

class Bike {
  var color: String

  init(color:String) {
    self.color = color
  }
}

var bike1 = Bike(color: "Blue")

var bike2 = bike1 // < The behavior I thought was a default 
                  // behavior of classes, only happens when 
                  // you set two class instances equal to 
                  // each other. As is done here.  

bike1.color = "Red"
print(bike2.color)  // prints Red

In this example, the behavior is not present:

// define a class
class Employee {

// define a property
var employeeID = 0
}

// create two objects of the Employee class
var employee1 = Employee()
var employee2 = Employee()

// access property using employee1
employee1.employeeID = 1001
print("Employee ID: \(employee1.employeeID)") 

// access properties using employee2
employee2.employeeID = 1002
print("Employee ID: \(employee2.employeeID)")

Output:

Employee ID: 1001
Employee ID: 1002