WWDC26 adds sectioned queries, codable attributes, ResultsObserver, and HistoryObserver so SwiftData apps can react to store changes without hand-rolling array diffs.
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SwiftData's iOS 18 schema macros can add indexes and uniqueness rules. Use them carefully for fast fetches and duplicate prevention.
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SwiftData history lets you ask what changed since a saved token, which is useful for widgets, sync, badges, and background work.
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I'm Trevor, a Swift developer working mainly in iOS 📱. This blog is where I share my learnings, thoughts & insights. Thanks for reading!
