> has to use unsafe because of performance considerations Java and C# solved this problem without unsafe, with JIT compilers. > The beauty of Rust, after all

> has to use unsafe because of performance considerations Java and C# solved this problem without unsafe, with JIT compilers. > The beauty of Rust, after all is that you can go to the lowest level if you like to, but you can stay high level if you like All sufficiently complex systems are written in more than one language. Operating systems are written in C and C++, have shell scripting running on top. Videogames are written in C++, they have integrated script engines or VMs for higher-level stuff. Productivity software like MS office or AutoCAD have script engines. No single language does the job. It’s not just performance versus safety tradeoff. These higher-level languages are much easier to learn, meaning developers are cheaper, and in many cases like VBA even non-developers can do stuff done with them. They often aren’t compiled or compile very fast, this makes iterations faster and allows interactive prototyping. They often run in sandboxes, solving security issues. I don’t program in Rust, but I’ve read quite a lot about it. And I program C++ and C# for decades, often in the same software at the same time. IMO C++ is better at lower-level things: tooling, SIMD, manual control over RAM layout, better at creating fast data structures, OpenMP, has way better libraries (e.g. in the current project I use Eigen a lot, it’s based on C++ metaprogramming i.e. not portable to anything else). C# is better for everything else: it’s safer, has way better libraries included (e.g. async IO is awesome), is higher level, for the last couple of years it’s cross-platform and open source, and is much easier to use.