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On Friday, 28 January 2022 at 16:03:17 UTC, Andrei Alexandrescu wrote:
>I couldn't find a distinct place where this new feature is documented. Is one out there? Thanks!
The switch was introduced in 2019 in this Pull Request: https://github.com/dlang/dmd/pull/9817
Based on the design you discussed in your draft DIP and DConf 2019 talk:
https://www.youtube.com/watch?v=aRvu2JGGn6E
https://gist.github.com/andralex/e5405a5d773f07f73196c05f8339435a
Apart from a few bug fixes, there hasn't been any development since its introduction AFAIK, so no documentation.