What's new in swiftdata

Asked on 07/30/2024

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What's New in SwiftData

SwiftData has introduced several new features and improvements to enhance data modeling and persistence across Apple's platforms. Here are the key updates:

  1. Schema Macro: A new schema macro helps avoid duplicate models.
  2. Model Containers: New ways to set up and configure model containers.
  3. Query Optimization: Complex filters and a new macro to improve performance.
  4. Index and Unique:
    • Index: Makes queries more efficient by indicating which properties are commonly queried together.
    • Unique: Ensures that a set of properties have no duplicate entries.
  5. Custom Data Stores:
    • SwiftData now supports custom data stores, allowing you to use alternative backends like SQLite, remote web services, or JSON files.
    • The new datastore protocol enables support for any persistence backend.
  6. History API:
    • Access to the history of changes in a datastore, useful for tracking local changes that need to be synced to a remote web service.
    • Migration from CoreData's persistent history to SwiftData history is now possible.
  7. Previewable Macro: Works great with SwiftData, making it easier to work with queries while iterating on views.

For a detailed overview, you can check out the session What’s new in SwiftData.

Relevant Sessions

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

Track model changes with SwiftData history

Reveal the history of your model’s changes with SwiftData! Use the history API to understand when data store changes occurred, and learn how to use this information to build features like remote server sync and out-of-process change handing in your app. We’ll also cover how you can build support for the history API into a custom data store.

Create a custom data store with SwiftData

Create a custom data store with SwiftData

Combine the power of SwiftData’s expressive, declarative modeling API with your own persistence backend. Learn how to build a custom data store and explore how to progressively add persistence features in your app. To get the most out of this session, watch “Meet SwiftData” and “Model your schema with SwiftData” from WWDC23.

What’s new in Swift

What’s new in Swift

Join us for an update on Swift. We’ll briefly go through a history of Swift over the past decade, and show you how the community has grown through workgroups, expanded the package ecosystem, and increased platform support. We’ll introduce you to a new language mode that achieves data-race safety by default, and a language subset that lets you run Swift on highly constrained systems. We’ll also explore some language updates including noncopyable types, typed throws, and improved C++ interoperability.