Swiftdata intro

SwiftData is a framework introduced in iOS 17 that simplifies building your app's model layer and persisting it across launches. It leverages modern Swift language features like macros to provide a fast, efficient, and safe way to handle data modeling and persistence. Here are some key points about SwiftData:

1. Modeling and Persistence: SwiftData allows you to model your app's data and persist it across launches. You can define your schema with simple Swift class additions, such as the model macro, and further refine it with attributes and relationships.

2. Custom Data Stores: SwiftData supports custom data stores, allowing you to use different persistence backends like SQLite, remote web services, or JSON files. This flexibility is achieved through the new Datastore protocol.

3. Schema Customization: You can avoid duplicate models with the new schema macro and set up and configure model containers in various ways.

4. Query Optimization: SwiftData provides tools to optimize queries with complex filters and a new macro to improve performance.

5. Xcode Previews: SwiftData integrates well with Xcode previews, making it easier to work with your queries while iterating on views.

For a detailed introduction to SwiftData, you can watch the session What’s new in SwiftData (00:01:01).

Relevant Sessions

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

These sessions provide a comprehensive overview of SwiftData, its new features, and practical examples of how to implement and customize it in your applications.