Meet Jeff Delaney: The Mastermind Behind @Fireship (youtu.be)
SerenityOS author says Rust is OO-hostile (www.youtube.com)
Skip to around 24m:00s
Faster than Rust and C++: the PERFECT hash table - strager (www.youtube.com)
It was recommended to me on YT and I found it super to be a super interesting presentation. Not just about this specific case but generally approaches to improve perf.