From Xcode > Preferences > Accounts... • Click the tiny cog icon at the bottom, then select • "Export Apple ID and Code Signing Assets" This creates a .developerprofile file (enter a password, to secure it) Then from the new machine: • "Import Apple ID and Code Signing Assets"

You forgot to say what model your MacBook Pro is... there are important differences, beyond storage and RAM. See https://support.apple.com/en-us/HT201300

From Xcode, select the TARGET, then from the "General" page, look at the "Deployment Info" section: • Select the devices you want (iPhone, iPad, Mac) As far as I know, it is not possible to prevent an iPad installing an iPhone app in compatibility mode.

When you first ran Xcode 13 RC, were you prompted to "Install Additional Components"? ...and did you?

When Xcode 13 stable version will be available for public? I would expect this on Monday, when iOS 15 releases. I have upgraded my iPad to iOS 15 RC version and couldn't able to run my application from my Xcode 12.5.1 version to iOS 15 RC now. Correct. • Xcode 12.5.1 cannot be used with iOS 15 • You can use Xcode 13 RC, or wait for the publicly available Xcode 13. • "RC" should be functionally identical to the final Release version (but it is not unknown for there to be an RC2, with further changes).

What is a "TableController"?

Here's your code, unmodified, running on a Mac. SwiftUI works on multiple platforms, and the details of how some styles appear can be platform-dependent. So two styles might look the same on iOS, but could behave differently on macOS.

If you're using the Simulator, there are various macOS utility apps, which let you easily view the Simulator files. I use SimPholders. There's also one called simMagnifier, which lets you veiw (and even edit) Core Data content. That might be worth a look, @GnerphSoft.

If you use an NSSavePanel to allow the user to choose the save location, that will implicitly grant the write permission. "When the user saves the document, macOS adds the saved file to the app's sandbox (if necessary) so that the app can write to the file."

Does your project include any external frameworks/dependencies?

Identifiers can be created automatically (e.g. from Xcode) or manually (on Apple Developer). The "IDENTIFIER" is the Bundle ID of the app (usually a reverse-domain name style string). Once an Identifier has been created (on Apple Developer), it's "IDENTIFIER" is fixed, and cannot be edited. You can only "Remove" it, or change it's "Description", or it's "Capabilities".

Following on from my original answer... The json response looks quite complicated, so I made a very simple test for the decoding: struct Food: Decodable { let description: String } struct FDCResponse: Decodable { let foods: [Food] } You have: self.FDCResults = decodedResponse.FDCResults ...and I don't know the structure of your FDCResults, so I just: print("decodedResponse: \(decodedResponse)") // FDCResponse ...and I got: decodedResponse: FDCResponse(foods: [DataTest.Food(description: "Apples, fuji, with skin, raw"), DataTest.Food(description: "Apples, gala, with skin, raw"), DataTest.Food(description: "Apples, honeycrisp, with skin, raw"), DataTest.Food(description: "Apples, granny smith, with skin, raw"), DataTest.Food(description: "Apples, red delicious, with skin, raw")])

Try following this guide: https://www.hackingwithswift.com/example-code/uikit/how-to-change-your-app-icon-dynamically-with-setalternateiconname

How are you adding the files to the Project? For example, have you tried (from Xcode): Right-click on Project "Add Files to {your Project}..." ...then navigating to "FileOut.dat"

On creating a new project, if Interface is set to "SwiftUI", then the only available language will be "Swift". Setting Interface to "Storyboard" gives the choice of Swift or Objective-C