[jane_red]

Applicability is not the main issue. D can be used for anything where speed matters, gamedev, data processing, machine learning, kernel programming. It is not a niche language. But as it is always with low profile languages that grow out of a sheer hobbyist talent and not backed or picked up by big companies it remains in its own humble world for years. On top of that D was unfortunate to have some pretty rough early period with transition from D1 to D2, two standard libs, several compilers, etc. etc. All this would not be an issue given there were hired teams working on it and big enough community. It all worked well against D. However, lurking around D forums and available libs left me with a good impression. Yeah, some tooling is missing and might be rough around the edges but there is plenty of work if you want to get your hands dirty. In addition D has a very helpful community of very skilled engineers imho (something I sometimes miss in other languages...).