And for kicks, here's a quote from that Youtube video you link: "So that was a surprise. (...) I've done zero profiling on this. I've made absolutely zero atte

And for kicks, here's a quote from that Youtube video you link: "So that was a surprise. (...) I've done zero profiling on this. I've made absolutely zero attempt to make this thing faster. None. In fact, you can pretty reasonably argue that I've gone out of my way to make it slower. And we are 40% faster than my C." Which doesn't mean that rust is faster than C, but that changing your approach can, in fact, lead to results you wouldn't have expected.