Algebraic Data Types in D?

[Wyatt via Digitalmars-d]

On Thursday, 31 July 2014 at 11:42:21 UTC, Remo wrote:
> http://tech.esper.com/2014/07/30/algebraic-data-types/
>
> D already has product type it is struct.
> But D lacks sum type also called tagged-union.
>
> Do you think it would be possible to add something like this to 
> D2 ?

I think you're looking for std.variant?
http://dlang.org/phobos/std_variant.html

(My understanding is it's undergoing some heavy work, so do be 
aware of that.)

-Wyatt