Why is D Slow?

[Guillaume Piolat]

On Wednesday, 26 July 2023 at 07:44:35 UTC, Dlang Lover wrote:
>
> https://github.com/kostya/benchmarks
>
> What's behind the speed problem of the D language?

Not wanting to disparage the results but why a benchmark would 
prove the existence of a "speed problem"? This is a non-sequitur. 
Rather it points to performance differences in the libraries, 
such as simdjson vs mir-ion.

For instance D performs better on "matrix multiplication" 
benchmark, but even then benchmark doesn't compare number 
crunching but also does GC allocation, network...