how do I use swift data

To use Swift Data, you can follow these steps based on the information presented at WWDC:

1. Import the Framework: Start by importing the Swift Data framework into your project.

2. Define Your Models: Use the @Model macro to define your data models. This macro is the core of Swift Data, allowing you to specify the schema for your app's data.

3. Model Container: Use the modelContainer modifier on your app's WindowGroup to inform the view hierarchy about your models. This setup allows your views to query and display data from the model container.

4. Custom Data Stores: Swift Data allows you to use custom data stores. You can configure your model container to use a custom backend, such as JSON files or a remote web service, by swapping out the default configuration with your custom data store.

5. Querying Data: Use the query macro to fetch data from the model container. You can optimize queries with complex filters and the new index macro to improve performance.

6. Track Changes: Swift Data provides a history API to track changes in your data, which is useful for syncing with remote services or updating UI elements based on data changes.

For a detailed walkthrough, you can refer to the session What’s new in SwiftData (00:00:57) which covers adopting Swift Data, customizing schemas, and more. Additionally, the session Track model changes with SwiftData history (00:00:45) provides insights into using the history API to track data changes.