Exercises

Now that you understand an instance's life cycle, it is time to spend some time in the Playground, the Swift REPL, or the Swift Sandbox, creating new classes and instances:

• Exercise 1: Create a new Employee class with a custom initializer that requires two string arguments: firstName and lastName. Use the arguments to initialize properties with the same names as the arguments. Display a message with the values for firstName and lastName when an instance of the class is created. Display a message with the values for firstName and lastName when an instance of the class is destroyed.
  • Create an instance of the Employee class and assign it to a variable. Check the messages printed in the Playground's Debug area. Assign a new instance of the Employee class to the previously defined variable. Check the messages printed in the Playground's Debug area.

• Exercise 2: Create a function that receives two string arguments: firstName and lastName. Create an instance of the previously...