Core Data: Stack Setup, Fetching & Saving. Core Data is an object-graph and persistence framework, not itself a database — it manages NSManagedObject lifecycles, relationships, and change tracking on top of a store (SQLi…
ReadCore Data: Contexts, Concurrency & Migrations. Thread/Queue Confinement. // Managed objects are confined to the queue of the context that created // them — passing one directly across threads is undefined behavior. // WR…
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