Proof of concept for v2 - NO duplication, NO `static if` hell, NO difficulty with interoperability

[zjh]

>On Monday, 1 November 2021 at
04:05:29 UTC, zjh wrote:

Another way is to "copy and modify" doctrine. What theirs(`C++`) 
is ours. Yes, we can.
In terms of what we are not good at. Yes, we can.