On Friday, 28 February 2025 at 01:06:01 UTC, Paul Backus wrote: > I'm currently working on Option!T for Phobos v3, and my plan is > for it to use SumType internally. Yes, you can, but _why_? What are you gaining from using SumType there? It can hold only one value for God's sake... I am probably missing something, so please enlighten me.