Using closure in function scope to make "real" private class members

[zjh]

On Wednesday, 8 June 2022 at 07:15:18 UTC, zjh wrote:
> On Wednesday, 8 June 2022 at 07:08:54 UTC, zjh wrote:
>
>> A simple problem , you have made it so complicated.
>
> Isn't it `out of the box`? Why `linter`?

Module without `class` as `encapsulation`, is there only `'d'` in 
the world?
Yes, we are the first!