The Importance of Macros in Swift Data

Using an annotation as sort of like the structure of the code to generate new code that's built with your project. The ad observable macro, which I think was the first place that we got a bunch of applause from it. And then Swift data just builds on that to go even further. It adds support for all of these persistence features, for undo and redo, for a ton of other stuff that you would have otherwise had to write manually.