Point-Free Videos

🔒 We explore the problems not solved by the `@State` macro, why we think they _should_ be, and how they were technically solved already (but with a tool you probably don't and shouldn't reach for), and how a `@LazyState` macro can close the gap without introducing any non-SwiftUI APIs.

🔒 WWDC26 brought us the brand new `@State` macro to succeed the property wrapper, which has been in SwiftUI since day one, in a completely backwards compatible way, which is some feat! But what's different about the macro, and how does it work? We'll pick apart the cryptic macro expansions to see something quite simple at the core.

🔒 This year SwiftData introduced `ResultsObserver`, a brand new way to observe changes outside of the view, where `@Query` for example cannot be used. What's SQLiteData have to say about that? To explore, we'll build a moderately complex geofence map editor _and_ get full test coverage of the feature.

🔒 We add a geofence to the `Trip` model and explore advanced features of SQLite, including JSONB and `json_each`, which allow us to efficiently store and query this data. And we will show that not all bundles of data need to be JSON: we are free to group our database columns among as many data types as we like.