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

[zjh]

On Sunday, 12 June 2022 at 15:05:55 UTC, zjh wrote:

>
> We all know the story of `'VIM' and 'Nvim'`. What `'d'` needs 
> is `'radical'` change, and `'DMD'` needs to be completely 
> `reconstructed`!
> At this time, it `makes sense` to completely `refactor` .
> Keep `'D2'` for maintenance version `only`!
> Only through `'thorough'` reconstruction can activat people's 
> interest in participating in `'DMD'`!


`C++` was revived through the radical `'c++11'`
Python has been revived through the radical `'PY3'`
`D` also needs `'D3'` to revive!
The earlier the radical refactoring `dmd`, the better.