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

[zjh]

On Thursday, 30 December 2021 at 23:51:30 UTC, Manu wrote:

You should insist that `Walter` to try it, he will feel really 
fragrant.
Right now ,I can't write a program without `...`,So,I hope d can 
also owns `...`.
Besides, your work is almost finished, only the last edge case , 
plus persuasion `walter`. It would be a pity if you don't have it 
done.
`...` is a very powerful feature.It is very important in the 
competition between D and `C++`.