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Rust already compiles as fast as C++ if you write in roughly equivalent style.

I can easily beat Rust, thanks to incremental linking and binary libraries.

In my experience C++ is a lot faster, especially with multiple cores.

I'm not sure what your point is there; rust and c++ are both famous for having slow compile times.

Languages with good compile times include:

- C[1] (unless you go crazy with the preprocessor)

- Go (unless you go crazy with code generation)

- D (unless you go crazy with templates)

1. With TCC or similar. Gcc/clang compile times are just ok (though better than with c++; and interestingly, though gcc is slower for c++, it's faster for c).

It should in theory be better because of modules instead of header files.

It is bad because rustc emits quite a lot of LLVM IR and lack of binary libraries / library caching.