Now let’s tally up what we’ve learned so far. We’ve downloaded and installed Xcode, and we’ve tried out its playground feature. In a playground, we can try out little bits of Swift code to see what they do, making them a good place for experimentation and discovery. We’ve also familiarized ourselves with looking up documentation on the iOS SDK, so we can find the classes and methods we’ll need to build our apps.
We’re now ready to start building our Twitter app, so let’s move ahead and see how to create Xcode projects.