Expert Core Data guidance (iOS/macOS) covering stack setup, fetch requests & NSFetchedResultsController, saving/merge conflicts, threading & Swift Concurrency, batch operations & persistent history, migrations, performance, and NSPersistentCloudKitContainer/CloudKit sync. Use when setting up a Core
Expert Core Data guidance (iOS/macOS) covering stack setup, fetch requests & NSFetchedResultsController, saving/merge conflicts, threading & Swift Concurrency, batch operations & persistent history, migrations, performance, and NSPersistentCloudKitContainer/CloudKit sync. Use when setting up a Core Data stack, debugging threading/concurrency crashes, resolving NSMergeConflict or constraint violati