bitstring

(a) has been copied in quite a few languages now. Here's my OCaml copy: https://bitstring.software/documentation/ (sorry about the bad website cert, it's not under my control) https://github.com/xguerin/bitstring We handle endianness very naturally. Performance of the OCaml version depends on whether everything is byte-aligned. It will compile-time optimize byte-aligned stuff to be fast, and do slow bit shifting for everything else. I believe this is an advantage over the Erlang original.

It'd be interesting to explore something similar to the bitstring[1] library for Ocaml. Where should one start if exploring syntax extensions for Rust. I haven't looked into rust in a while now so i'm not sure how far one can get with macros these days. [1] https://github.com/xguerin/bitstring