>After trying rust only for a few hours i really wonder how come this language remain the most loved one on surveys
Arguably, it's because you tried it "only for a few hours". Rust has a relatively steep learning curve and it usually takes several months to become comfortable with it. But once you get over it, it often becomes quite hard to return to your previous languages, be it Python or C/C++.
Yes, there are tasks which are ill-fit for Rust and your IO-bound backend example is a good one. Not only Rust ecosystem is somewhat underdeveloped in this area (and don't get me started on Rust async and the heap of troubles it causes...), but also you have business requirements which change unpredictably and Rust's strictness introduces a certain friction in such environment.
But I think your mobile library can be a good project to properly learn Rust. If it's properly encapsulated, I don't think it will cause much trouble to your team outside of build system changes and risks associated with you being its sole developer.
> Arguably, it's because you tried it "only for a few hours". Rust has a relatively steep learning curve and it usually takes several months to become comfortable with it. But once you get over it, it often becomes quite hard to return to your previous languages, be it Python or C/C++.
You failed to address OP's point.
OP wondered why would he, or anyone, subject anyone else to a steep learning curve if there are no meaningful advantages to be gained.
As OP mentioned:
> Take backend dev for example: unless you're trying to squeeze the last drop of performance from your CPU, most concurrency issues are usually dealt with at the middleware level (DB, Queue, Nginx, etc), and most performance issues are usually I/O related.
Why do you believe that doubling down on a whole new programming language and tech stack would help address the fact that you do not benefit from any of it's sales pitches?
Honestly, your comment reads like a boilerplate reply to any criticism of Rust that presumes Rust's only problem is it's developer experience caused by it's learning curve but once that's behind anyone it's somehow the ideal solution for any imaginable scenario.
Arguably, it's because you tried it "only for a few hours". Rust has a relatively steep learning curve and it usually takes several months to become comfortable with it. But once you get over it, it often becomes quite hard to return to your previous languages, be it Python or C/C++.
Yes, there are tasks which are ill-fit for Rust and your IO-bound backend example is a good one. Not only Rust ecosystem is somewhat underdeveloped in this area (and don't get me started on Rust async and the heap of troubles it causes...), but also you have business requirements which change unpredictably and Rust's strictness introduces a certain friction in such environment.
But I think your mobile library can be a good project to properly learn Rust. If it's properly encapsulated, I don't think it will cause much trouble to your team outside of build system changes and risks associated with you being its sole developer.