Statically Extractable Strings and DRY

[samdeane]

This thread gives a little more context:

What are the compiler technologies that support the App Intents framework?

This is indeed build time extraction. There is an "Extract app intents metadata" step in the build log. The way this works is that the Swift compiler outputs some information that it generates while compiling your code, which describes what types are available in your code, as well as type-level and some value-level information from your App Intents method implementations. This information is parsed by another tool which generates a metadata.appintents directory in your built product which conta…