On Day 16 and noticed something interesting. The Xcode Project Navigator panel shows this:

After running the following code:

let fm = FileManager.default
let path = Bundle.main.resourcePath!
let items = try! fm.contentsOfDirectory(atPath: path)

The constant items will get the following array:

["CodeSignature", "Project-01", "nssl0049.jpg", "Base.lproj", "nssl0046.jpg", "nssl0091.jpg", "nssl0045.jpg", "nssl0051.jpg", "nssl0041.jpg", "nssl0042.jpg", "nssl0043.jpg", "nssl0033.jpg", "Info.plist", "PkgInfo", "nssl0034.jpg"]

That doesn't match what you see in the Project Navigator panel. contentsOfDirectory only does a shallow search so will not display contents of any subdirectories. So it seems what's displayed in the Project Navigator panel is only a visual representation of how the actual data is stored in the bundle - even though the panel displays a folder named Contents which contains all the nssl files, no such directory heirarchy actually exists in the bundle.

According to stuff I've heard and read (sorry, I don't have any link, but Paul mentioned this in one or more videos), when the app is compiled, Xcode puts all resources in a single folder. It doesnt matter whether you created separate folders in your project, Xcode will compile them into a single folder, including image files, sound files, plist files (which a read in run time), etc. So, it makes sense that the listing you got is a bit different from the one shown in Xcode.

hi,

@guseulalio is partially right -- obviously, the swift sources don't get copied since they're compiled, and things like the .plist files have to live at the main level of the bundle for the app to run -- but if you have data files (e.g., some .json files you want to use to pre-populate data for your app) and if you put them in a real folder (not one of those yellow, organizational groups, but a real blue folder-reference), those will go into the bundle as a folder.

you'll find many references about this out on the internet. one such might be this one from swiftdevjournal.com.

hope that helps, DMG