Can you elaborate on how Rust and C++ differ in the kinds of software they’re optimized for? And what makes C++ more elegant for purpose?

> Modern C++ is by far the most expressive systems language.

If you want to iterate over a range of integers, you need to manually explain to the computer how to do it. In 2023. Also, you need to Write Everything Twice because of the ancient header system.

No you don't. That is what ranges and modules are for.

Ranges: kind of, there is the very awkwardly named std::ranges::iota_view, but it doesn't support random access and who knows if the compiler can optimize iteration over it into a simple loop.

Modules are not supported by most compilers (in g++ you have to enable them as an experimental feature with -fmodules-ts, and if you want to import the standard library as modules, you need to pre-compile them into your project directory with some arcane commands).

Ranges: they are there, naming is a matter of taste.

Modules: GCC and clang will eventually get there, I am already enjoying them on VC++

    #define RANGE(type, name, last) type name = 0, last__ = (last); name != last__; name++

    for (RANGE(i32, i, foo->count))
        ...

That solves the problem even in C. But why care much, typing a few plain loops isn't among the hard problems to solve.

Compared to Rust.

Once you you've worked enough with proper enums and matches, that's the first thing you'll be lacking in C++ (and no, std::variant is a horrible mess without proper syntax support and doesn't even get close).