Hands-On Server-Side Web Development with Swift

Adding a new function to the delegate protocol

Next, add a new function to the delegate protocol to support editing an existing entry.

Add an additional function to delegate the Done Editing event to MainScreenViewController:

// Define the delegate protocol to inform Main Screen View Controllerprotocol EntryDetailsViewControllerDelegate: class {    //... previously defined functions    // Delegate Done Editing Event    func entryDetailsViewController(_ controller: EntryDetailsViewController, didFinishEditing entry: JournalEntry)}

Implement the corresponding function in the MainScreenViewController class:

func entryDetailsViewController(_ controller: EntryDetailsViewController, didFinishEditing entry: JournalEntry) {    updateEntry(entry: entry) dismiss(animated: ...