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

[Anonymouse]

On Thursday, 12 May 2022 at 15:17:10 UTC, Adam D Ruppe wrote:
> It is simpler than it looks, I wrote about it in my book and in 
> a post here:
>
> https://forum.dlang.org/post/xklcgjaqggihvhctczxx@forum.dlang.org

"Then commas separate the definitions of each placeholder 
variable, just as if they  were template argument definitions 
[...]"

That... makes sense, I didn't think of them like that.