Switching Child View Controllers in iOS with Auto Layout

In this post, I will show you how to switch between two child view controllers that are constrained with auto layout. I struggled with the name of this post since I called my last post in this series The Easy Way to Switch Container Views in iOS. I didn’t want to say this method is “the hard way” or “the right way” because the “easy” method might be the right method if the downsides I mentioned in