Adding a new design constraint to D

[zjh]

On Tuesday, 14 June 2022 at 20:27:23 UTC, deadalnix wrote:

> The feature is useless.

What is `useless` to you does not mean that it is useless to 
`others`.
Many languages are `useless` to me. Shouldn't they exist?
If the D language cannot become `more complex`, `c++` will devour 
you!
Then people will go to `'c++'`.
while the `d` community is getting smaller and smaller!