Mix struct types in the same array

[tirithen]

On Wednesday, 18 December 2019 at 22:11:10 UTC, Sebastiaan Koppe 
wrote:
>
> If you know all types up front you can use the Sumtype library 
> on code.dlang.org

Thanks, it's a good starting point, the best would be if I only 
needed to define that the struct would implement void applyTo(ref 
User user) so that could be run in the loop to update the User 
entity.

But I'll try the Sumtype library, that takes me forward, thanks 
for the answer!