CoreData in Playground

CoreDataPlayground.swift

// Paste this in Playground

import CoreData

let url = Bundle.main.url(forResource: "HikingApp", withExtension: "momd")

let model = NSManagedObjectModel(contentsOf: url!)

let container = NSPersistentContainer(name: "HikingApp")

let context = container.viewContext

class Trip: NSManagedObject {

}

extension Trip {   
   @nonobjc public class func fetchRequest() -> NSFetchRequest<Trip> {
       return NSFetchRequest<Trip>(entityName: "Trip")
   }
   
   @NSManaged public var endLocation: String?
   @NSManaged public var endOdoReading: Double
   @NSManaged public var endOdoReading2: Double
   @NSManaged public var endTime: NSDate?
   @NSManaged public var endTime2: NSDate?
   @NSManaged public var isRoundTrip: Bool
   @NSManaged public var name: String?
   @NSManaged public var startLocation: String?
   @NSManaged public var startOdoReading: Double
   @NSManaged public var startOdoReading2: Double
   @NSManaged public var startTime: NSDate?
   @NSManaged public var startTime2: NSDate?

}

let trip = Trip(context: context)
trip.name = "Smoky Mountain at Tennessee"

try? context.save()