How can I delete object from core data in swift 3

Question

This is how I save data to core, now I want to delete specific object from whole data. How can I do that?
This is how I save data:

func saveProductDetail         


        

Answer 1

Check this code for swift 3 core data operations

import CoreData

class CoreDataOperations: NSObject {

    // MARK: Save data
    func saveData() -> Void {
        let managedObjectContext = getContext()
        let personData = NSEntityDescription.insertNewObject(forEntityName: "Person", into: managedObjectContext) as! Person
        personData.name = "Raj"
        personData.city = "AnyXYZ"

        do {
            try managedObjectContext.save()
            print("saved!")
        } catch let error as NSError  {
            print("Could not save \(error), \(error.userInfo)")
        } catch {

        }

    }

    // MARK: Fetching Data
    func fetchData() -> Void {

        let moc = getContext()
        let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Person")

        do {
            let fetchedPerson = try moc.fetch(fetchRequest) as! [Person]

            print(fetchedPerson.count)
            for object in fetchedPerson {
                print(object.name!)
            }

        } catch {
            fatalError("Failed to fetch employees: \(error)")
        }

    }



    // MARK: Delete Data Records

    func deleteRecords() -> Void {
        let moc = getContext()
        let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Person")

         let result = try? moc.fetch(fetchRequest)
            let resultData = result as! [Person]

            for object in resultData {
                moc.delete(object)
            }

            do {
                try moc.save()
                print("saved!")
            } catch let error as NSError  {
                print("Could not save \(error), \(error.userInfo)")
            } catch {

            }





    }

    // MARK: Update Data
    func updateRecords() -> Void {
        let moc = getContext()

        let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Person")

        let result = try? moc.fetch(fetchRequest)

            let resultData = result as! [Person]
            for object in resultData {
                object.name! = "\(object.name!) Joshi"
                print(object.name!)
            }
            do{
                try moc.save()
                print("saved")
            }catch let error as NSError {
                print("Could not save \(error), \(error.userInfo)")
            }


    }

    // MARK: Get Context

    func getContext () -> NSManagedObjectContext {
        let appDelegate = UIApplication.shared.delegate as! AppDelegate
        return appDelegate.persistentContainer.viewContext
    }
}

You can get more from https://github.com/rajkumar24u/CoreDataOperations