SwiftでNSManagedObjectのサブクラスを作成してフェッチする方法(Beta5で) ref: http://qiita.com/rizumita/items/3129b18bb65fb72c2cbb

file0.txt

let person = NSEntityDescription.insertNewObjectForEntityForName("Person", inManagedObjectContext: context) as Person

file1.txt

let entity = NSEntityDescription.entityForName("Person", inManagedObjectContext: context)
let person = Person(entity: entity, insertIntoManagedObjectContext: context)

file2.txt

let request = NSFetchRequest(entityName: "Person")
let array = context.executeFetchRequest(request, error: nil)
let persons = array as? [Person]