> IME Rust is slower to write For a backend webservice prototype, that's probably true. It's not true for everything, though. Especially if there are performan

> IME Rust is slower to write For a backend webservice prototype, that's probably true. It's not true for everything, though. Especially if there are performance requirements or you need to handle errors properly. I've found Rust to be extremely productive for implementating interpreters, for example, thanks in no small part to algebraic data types and pattern matching. It's not quite as ergonomic as Haskell/OCaml, since you can't currently match under Box's, but hopefully that feature will get stabilized soonish. I also have used it for computationally intensive apps, such as a poker odds calculator. Going from a single threaded ~24 hr runtime to a ~15 min runtime on 96 vCPU took a few minutes, thanks to rayon. Of course C/C++ with openmp loop annotations is similarly quick for trivially parallel problems, but Rust's built in unit testing and package management make me far more productive for things like this than in C/C++.