draft proposal for Sum Types for D

[TheGag96]

On Friday, 2 December 2022 at 19:44:07 UTC, Timon Gehr wrote:
> I am a user and I am absolutely going to prefer having to 
> explicitly check the tag before I access it. It's so much more 
> useful. Compile-time errors are great for refactoring. Any 
> amount of dynamic typing is a hassle.

+1. The whole feature seems way less useful without compile-time 
checking.