Deleting all data in a Core Data entity in Swift 3

Question

Is there a way to do a batch delete of all data stored in all of the entities in core data?

I read somewhere that in iOS 9 or 10 that apple introduced a way to do batch

Answer 1

To flesh out Tom's reply, this is what I added to have a complete routine:

func deleteAllRecords() {
    let delegate = UIApplication.shared.delegate as! AppDelegate
    let context = delegate.persistentContainer.viewContext

    let deleteFetch = NSFetchRequest(entityName: "CurrentCourse")
    let deleteRequest = NSBatchDeleteRequest(fetchRequest: deleteFetch)

    do {
        try context.execute(deleteRequest)
        try context.save()
    } catch {
        print ("There was an error")
    }
}