Persistence framework for Cocoa Touch.

Quick Reference

Create

let widget = NSEntityDescription.insertNewObjectForEntityForName(
                "Widget", inManagedObjectContext: managedObjectContext)
                as! Widget
// then at some point:
try managedObjectContext.save()

Read All

let fetchRequest = NSFetchRequest(entityName: "Widget")
let widgets = try managedObjectContext.executeFetchRequest(fetchRequest)
                    as? [Widget]

Read Some

let fetchRequest = NSFetchRequest(entityName: "Widget")
fetchRequest.predicate = NSPredicate(format: "widgetId == %@", idToFind)
let widgets = try managedObjectContext.executeFetchRequest(fetchRequest)
                    as? [Widget]

Update

Individual objects don't need to be saved; you just need to save the entire managed object context at some point:

try managedObjectContext.save()

Delete

managedObjectContext.deleteObject(widget)