reflection based on my experience so far on compile-time meta-programming in D as a novice user: the problems

[mw]

On Monday, 14 September 2020 at 18:20:02 UTC, Steven 
Schveighoffer wrote:
>    // this would be easier with string interpolation!
> , D has far superior string manipulation capabilities.

Basically, your solution is: let's just use strings! (forget 
about of all the other fancy mechanism I've listed in point (1)). 
  Yes, that's right: source code should just be strings.

 From that point of view, C-preprocessor is conceptually at a high 
level.