Last month, I was building an iOS app that needed to parse user input into structured data without sending anything to the cloud. The traditional approach would've involved complex regex patterns or third-party APIs. Then I discovered Apple's Foundation Models framework and its @Generable macro — and everything changed.

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The @Generable macro is Apple's Swift-native solution for generating structured output from on-device language models. It's part of the Foundation Models framework introduced at WWDC 2026, and it's fundamentally changing how we build AI-powered iOS apps.…