Extending enum to safely loop between cases

Daily Coding Tip 005

Although an enumeration is not an array, it is sometimes necessary to iterate over the cases that it contains. In my enumeration I have the names of three fruits: apple, banana and pear. My enum conforms to the CaseIterable protocol, and this allows me to have access to an array of my cases.

What if I want to change from my current case to the next case…