iOS code overview

- [Instructor] As I mentioned, our project is based … on a template for a master detail flow. … So, we have a table view that navigates … down to a detail view. … The detail view is where the user can enter and edit notes. … So, let's kind of go through this code. … The app delegate is untouched. … Nothing's changed there. … So, let's start with the master view controller. … So, we have a property to the detail view controller, … an array of Strings that are the notes. … We have a user login which is a struct, … if we navigate to that, that just has a username … and password for a user. … And we have a selected index path, … and we use this for a couple of reasons … that we'll see in just a second. … The view did load is standard. … The view will appear is, as well. … In the view did appear, we're going to check to see … if the user's logged in. … Now, this is in an extension of the UI view controller. … So, if we go to that, we'll see that it checks … user defaults for the logged in key. …