Enabling core data lightweight migration in Swift 3

Question

According to the articles I have read the correct way to enable core data light weight migrations is by passing options to addPersistentStoreWithType:

Answer 1

You do it using NSPersistentStoreDescription, which is where all those options moved to in the Swift 3 updates. Do this before the call to loadPersistentStores:

let description = NSPersistentStoreDescription()

description.shouldInferMappingModelAutomatically = true
description.shouldMigrateStoreAutomatically = true

container.persistentStoreDescriptions = [description]