It's definitely not your incompetence. I started learning D a few months ago and it didn't click until someone on IRC explained it clearly to me. It's not in the tutorial or anything unless I missed it.
Re:My Vision of D’s Future
by he_the_great on Thursday October 17, 2019 @12:04AM
(#21278816)
It is the first thing I added to my articles when I introduced range based operations :
Perhaps it's just my own incompetence though!