How do I store data with swift?

To store data with Swift, you can use the Swift Data framework, which provides a robust and flexible way to manage your app's model layer and persist data across app launches. Here are some key points and sessions from WWDC 2024 that cover this topic:

1. Swift Data Basics:

   • Swift Data allows you to define your schema with simple additions to a Swift class, using the @Model macro.
   • You can further refine your schema with attributes and relationships.
   • Swift Data supports indexing and unique constraints to make queries more efficient and ensure data integrity.

   For more details, you can refer to the Platforms State of the Union session.

2. Custom Data Stores:

   • Swift Data supports custom data stores, allowing you to use any persistence backend, such as SQLite, a remote web service, or JSON files.
   • You can implement a custom data store by changing the data store configuration and using the new Datastore protocol.

   For a detailed walkthrough, check out the Create a custom data store with SwiftData session.

3. Adopting Swift Data:

   • To use Swift Data in your app, import the framework and decorate your models with the @Model macro.
   • Use the modelContainer modifier on the WindowGroup to inform the view hierarchy about your models.

   This is demonstrated in the What’s new in SwiftData session.

4. Tracking Changes:

   • Swift Data provides access to the history of changes in a datastore, which is useful for tracking local changes that need to be synced to a remote web service.

   For more information, see the Track model changes with SwiftData history session.

Relevant Sessions

1. Platforms State of the Union
2. Create a custom data store with SwiftData
3. What’s new in SwiftData
4. Track model changes with SwiftData history

These sessions provide a comprehensive overview of how to store data using Swift Data, including setting up your models, customizing data stores, and tracking changes.