The Julia folks have done some interesting work with missing values that I thought might be of interest [1, 2].

Looks like it would be pretty easy to do something similar in D with either unions or Algebraic. The time-consuming part would be making sure everything works seamlessly with mathematical functions.



[1] https://julialang.org/blog/2018/06/missing
[2] https://www.reddit.com/r/programming/comments/8spmca/firstclass_statistical_missing_values_support_in/

On Thursday, 21 June 2018 at 15:11:51 UTC, jmh530 wrote:
> The Julia folks have done some interesting work with missing values that I thought might be of interest [1, 2].
>
> Looks like it would be pretty easy to do something similar in D with either unions or Algebraic. The time-consuming part would be making sure everything works seamlessly with mathematical functions.
>
>
>
> [1] https://julialang.org/blog/2018/06/missing
> [2] https://www.reddit.com/r/programming/comments/8spmca/firstclass_statistical_missing_values_support_in/

That was interesting. I wonder how it will be implemented as smooth in D, because it has to make sure everything that computes with empty is still empty and I believe it'll be a little challenging