Swift: Why We Use Optionals

Today let's go through a relatively simple exercise of finding the greatest value inside a list of Integers. I'd like to use this example to explain why we use Optionals when programming in Swift for our iOS applications. Basically the intent is to remove ambiguity from our programs as much as possible. Enjoy. Instagram Firebase Course https://www.letsbuildthatapp.com/cour... Facebook Group https://www.facebook.com/groups/12406... iOS Basic Training Course https://www.letsbuildthatapp.com/basi... Completed Source Code https://www.letsbuildthatapp.com/cour... Follow me on Twitter: https://twitter.com/buildthatapp