What classification should shared objects in qeued thread pools have?

[mw]

On Thursday, 1 October 2020 at 00:00:06 UTC, mw wrote:
> On Wednesday, 30 September 2020 at 20:13:47 UTC, IGotD- wrote:
>> [...]
>
> I think declaring the container and item as `shared` is the D's 
> encouraged way of sharing data among different threads.
>
>> [...]
>
> then just cast the `shared` away: cast()data.
>
>> [...]
>
> I think using `shared` is the D's encouraged way.
>
> If there is a better way do this in D, I'd want to know it too.

BTW, this is what I learnt from my previous thread:

https://forum.dlang.org/post/nlhjzafnmywrgkyjljsi@forum.dlang.org