Why are some types from std not in the core of the language?

[zjh]

On Sunday, 12 June 2022 at 13:40:16 UTC, ryuukk_ wrote:

> Our competitive features are becoming the norm, and we are 
> failing behind in many other crucial areas

You're right, `d'` need depends on the strength of the 
organization. `DMD` needs radical refactoring.
`The source code` is too bad. `Divide` large files into `small 
files` and do `class encapsulation`!