So far, we created and extended classes in the Playground. In fact, we could execute the same sample code in the Swift REPL. The Swift REPL is a read-eval-print loop, also known as an interactive language shell, where we can enter expressions or pieces of code, make Swift evaluate them, and prints the results.
Now, we will create a simple iOS app based on the Single View Application template with Xcode. We will recognize the usage of object-oriented code included in the template—that is, before we add components and code to the app. Then, we will take advantage of the
GameRepository class we created in the previous chapter and use it to populate a UI element.
Navigate to File | New | Project… in Xcode. Then, ...