We can safely say that Rust being used in various application domains already, slowly improving the corresponding libraries. There is exist quite important domain, which is often overlooked, but of the immense importance - finances, taxes and business logic applications. In fact, this is precisely where Rust will shine with its predictability, speed, and openness to the feedback. I asked a couple of times if someone actually use it in these domains, and you can see a few examples of the traits being developed (and often abandoned) for such applications. And the business logic, taxation computations, financial transactions handling is what makes our world economy going, essentially preventing crashing everything to pieces. This kingdom totally ruled by COBOL and Java. Obviously using Rust would be a total level (or even levels) up. So hereby, I propose to create the Business Applications Working Group for coordinating such efforts. It might be a low traffic one, but at least people would work together on building the relevant crates ecosystem, and compiler features if required.
Relevant proposal - Kickstarting Database Working Group
Examples from Java:
- https://github.com/prowide/prowide-core (SWIFT transaction system library)
- https://lakshmidrip.github.io/DRIP (fixed income analytics)
- Awesome Quant Finances List
- Open Source ERP Systems List