The style guide that we define in this book is just a guide. It reflects the author's opinion on how Swift code should be written and is meant to be a good starting point for creating your own style guide. If you really like this guide and adopt it as it is, great. If there are parts that you do not agree with, then change within your guide that is great as well. The appropriate style for you and your team is the one that you feel comfortable with, and it may or may not be different from the guide in this book. We should also point out that Swift is a very young language and people are still trying to figure out the appropriate style to use with Swift; therefore, what is recommended today maybe frowned upon tomorrow. Don't be afraid to adjust your style guide as needed.

One thing that is noticeable in the style guide within this chapter, and most good style guides is, there is very little explanation about why each item is preferred or nonpreferred. Style guides should give...