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

[Salih Dincer]

On Wednesday, 11 May 2022 at 05:41:35 UTC, Ali Çehreli wrote:
> What are you stuck at? What was the most difficult features to 
> understand? etc.

The concept of traits (std.traits) confuses me enough. Actually 
the problem is that the interface is disorderly (disorganizedly). 
As if it was very difficult to establish a hierarchical system...

Also, multitasking is like that, it's disorganizedly: 
taskPool.parallel(std.parallelism), yield(std.concurrency), 
ThreadGroup(core.thread)...etc(pufff!)

SDB at 79