Until this point, we have been concentrating almost exclusively on learning Swift without learning much about the platforms that it was designed for. This is because learning a new platform is a completely different world from learning a language. Learning a programming language is like learning the basic grammar of a spoken language. The grammar between the spoken languages generally expresses similar concepts but the specific words of the languages are often more varied, even if they are sometimes recognizable. Learning a programming language is learning how to connect the specific vocabulary of your desired platform. This chapter will be about learning some of the vocabulary of the iOS framework.
We will do this by going through the process of starting to develop a simple camera app. Along the way, we will learn some of the most critical vocabularies to get started with any other kind of iOS app and many of the concepts will be transferable...