We’ve previewed patterns in switch for two rounds, and have received some feedback. Overall, things work quite well, but there were a few items which received some nontrivial feedback, and I’m prepared to suggest some changes based on them. I’ll summarize them here and create a new thread for each with a more detailed description.
I’ll make a call for additional items a little later; for now, let’s focus on these items before adding new things (or reopening old ones.) 1. Treatment of total patterns in switch / instanceof 2. Positioning of guards 3. Type refinements for GADTs 4. Diamond for type patterns (and record patterns)
