[pjmlp]

And still, as long as Rust depends on GCC and LLVM for its reference implementations, that alone will be enough to keep C++ around.

Same applies to D, as dmd's optimizer isn't as rich, nor its backend supports as many CPUs, as do ldc and gdc, built on top of LLVM and GCC respectively.

[teleforce]

It's a bit rich complaining on D dmd optimization when D compilation speed performance is much faster than both C++ and Rust. The backend supports could be better but I'm afraid it's a catch-22 situation until D is more widely used. Like I mentioned before for Data Science and Machine Learning eco-system, system programmers (B-type programmer) generally won't replace C++ not that they can't, while on the other hand analyst programmers (A-type) are avoiding C++ like a plague and prefer user friendly programming languages for examples Python and Matlab [1].

[1] There are two types of data scientists — and two types of problems to solve:

https://medium.com/@jamesdensmore/there-are-two-types-of-dat...