Swift 3 Core Data Delete Object

Question

Unfortunately the new Core Data semantics make me crazy. My previous question had a clean code that didn\'t work because of incorrect auto generation of header files. Now I

Answer 1

Swift 4.1, 4.2 and 5.0

     let appDelegate = UIApplication.shared.delegate as! AppDelegate
     let context = appDelegate.persistentContainer.viewContext
     let requestDel = NSFetchRequest(entityName: "Users")
     requestDel.returnsObjectsAsFaults = false
  // If you want to delete data on basis of some condition then you can use NSPredicate
  //  let predicateDel = NSPredicate(format: "age > %d", argumentArray: [10])
  // requestDel.predicate = predicateDel


     do {
          let arrUsrObj = try context.fetch(requestDel)
          for usrObj in arrUsrObj as! [NSManagedObject] { // Fetching Object
              context.delete(usrObj) // Deleting Object
         }
     } catch {
          print("Failed")
     }

    // Saving the Delete operation
     do {
         try context.save()
     } catch {
         print("Failed saving")
     }