Swiftdata intro
Generated on 8/2/2024
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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:
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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.
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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.
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Schema Customization: You can avoid duplicate models with the new schema macro and set up and configure model containers in various ways.
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Query Optimization: SwiftData provides tools to optimize queries with complex filters and a new macro to improve performance.
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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
These sessions provide a comprehensive overview of SwiftData, its new features, and practical examples of how to implement and customize it in your applications.
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.
A Swift Tour: Explore Swift’s features and design
Learn the essential features and design philosophy of the Swift programming language. We’ll explore how to model data, handle errors, use protocols, write concurrent code, and more while building up a Swift package that has a library, an HTTP server, and a command line client. Whether you’re just beginning your Swift journey or have been with us from the start, this talk will help you get the most out of the language.
Platforms State of the Union
Discover the newest advancements on Apple platforms.
What’s new in SwiftData
SwiftData makes it easy to add persistence to your app with its expressive, declarative API. Learn about refinements to SwiftData, including compound uniqueness constraints, faster queries with #Index, queries in Xcode previews, and rich predicate expressions. Join us to explore how you can use all of these features to express richer models and improve performance in your app. To discover how to build a custom data store or use the history API in SwiftData, watch “Create a custom data store with SwiftData” and “Track model changes with SwiftData history”.