It's a new, faster algorithm with rule pattern matching. The language is only mentioned once as an implementation detail, not that rust's 69x faster than C++.

IMO when anything is rewritten (usually in a modern language), it's faster than the original implementation. That's usually because you have much better hindsight since the entire implementation is finished before the rewrite is started.

I'm sure the more modern languages also help though, but I don't think that using a modern language is the major reason for the speedup.

Languages aren't "fast" per se, but a language will help you converge with better ideas faster.

It's a regular working process.. use a language that let you write ideas down and test them quick. Later reimplement them in assembly. I mean C.

Sounds like algo.

Algorithm. The title is a bit misleading, and conveys that "it's faster because we re-wrote it in rust". If any thing, the move to rust might cause it to be a little slower (compared to the same thing written in c++ and considering how heavily optimized they said it was; not dinging rust, but you can't just port cpp optimizations to rust with syntax changes due to safety requirements etc).