Question 1

How do I migrate an existing Core Data app to CoreStore?

Accepted Answer

CoreStore allows gradual adoption by integrating with existing .xcdatamodeld files and NSManagedObject subclasses. Set up a DataStack with your current model, use transactions for new updates, and keep legacy fetch requests while transitioning to CoreStore's API for better safety and features.

Question 2

CoreStore vs Realm for Swift apps: which should I use?

Accepted Answer

CoreStore builds on Core Data, offering deep Apple ecosystem integration and type safety in Swift, ideal for apps already using Core Data or needing SwiftUI/Combine support. Realm is a cross-platform database with its own engine, often faster for some operations; choose CoreStore for Core Data loyalty and Realm for cross-platform or raw performance needs.

Question 3

How to use CoreStore with SwiftUI lists and data binding?

Accepted Answer

Use the @ListState property wrapper with a ListPublisher to bind SwiftUI views to Core Data entities. This automatically updates the UI when data changes, leveraging CoreStore's observation system for efficient diffing and animations, similar to @FetchRequest but with more control.

Question 4

What's the performance impact of CoreStore compared to raw Core Data?

Accepted Answer

CoreStore adds minimal runtime overhead as it primarily provides a safer API wrapper; however, its transaction model and observation mechanisms are optimized. Complex operations like heavyweight migrations or large data imports might still face Core Data's inherent performance limits, so profile as needed.

Question 5

Can I use CoreStore without .xcdatamodeld files entirely?

Accepted Answer

Yes, CoreStore supports defining entities entirely in Swift using CoreStoreObject subclasses, eliminating .xcdatamodeld files. This enables type-safe properties, easier refactoring, and custom types, but requires committing to code-based model management.

Question 6

How to handle errors and rollbacks in CoreStore transactions?

Accepted Answer

Transactions use a Result type with success and failure cases; you can catch errors in completion blocks or use failure handlers. For rollbacks, throw CoreStoreError.userCancelled or let errors propagate, and CoreStore will automatically revert changes, ensuring data integrity.

CoreStore

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