that was my first thought too. ocaml would have addressed all the complaints he had with rust: * far more concise * familiar exception handling mechanism

that was my first thought too. ocaml would have addressed all the complaints he had with rust: * far more concise * familiar exception handling mechanism * classes and inheritance for the few places he needed them * mutability * bytestrings missing are * proper support for enum subset types (i've felt the need for those too) * exhaustiveness checking for uint8 * bit length (seems like a very niche thing; i'm sure someone's implemented it in a library somewhere) rust makes a compelling competitor to d as an upgrade path from c++, but if you're porting code from a high-level, dynamic language like python, ocaml is almost always going to be a better experience.