Quora: Why hasn't D started to replace C++?

[Ola Fosheim Grøstad]

On Tuesday, 30 January 2018 at 21:49:39 UTC, H. S. Teoh wrote:
> Meaning, the "enormous performance advantage" is because of 
> "extremely eefficient native code".  I don't argue that C++ has 
> extremely efficient native code. But so has D. So the claim 
> that C++ has an "enormous performance advantage" over D is 
> specious.

Well, it isn't relevant for those people who would adopt D anyway.

Of course, C++ and Java have some advantages by being so large 
that there is a market for commercial specialty solutions and 
services... Although most C++ and Java programmers use tooling 
that is essentially free (well except perhaps the IDE), so for 
most of them it won't matter.

Even when smaller languages try to implement such 
tooling/features there isn't a large enough user base to harness 
the implementation (since even for big languages the actual user 
base for those features are low), so it is very hard for smaller 
languages to branch into those special niches unless the whole 
language feature set is geared towards a specific niche... but 
that harms adoption too...