What are (were) the most difficult parts of D?

[zjh]

On Saturday, 14 May 2022 at 04:09:00 UTC, Ali Çehreli wrote:
>
> stopped by a spam filter.


Right.

D forum should add a "`author delete`" function.
Likewise, each post could add something like `votes` , good posts 
will naturally `come out` and be collected together.
It's really convenient for beginners of `d`.

This way, the similar answer does not have to be repeated.