On 11/28/2022 6:53 PM, Adam D Ruppe wrote: > Curious, what did you find lacking in std.sumtype? > > Same question to Walter. It's addressed in the draft DIP I just posted. https://github.com/WalterBright/DIPs/blob/sumtypes/DIPs/1NNN-(wgb).md I did email std.sumtype's author, Paul Backus, for his observations but have not heard back yet.