We are developing a Rust extension mechanism for R here:
Rust is likely to be the successor to C++ because of its safety and ease of use.
In particular, it is possible to write domain specific languages within Rust code
and generate wrappers to other languages through procedural macros.
Rust has tens of thousands of excellent packages and it is our hope to be able
to automate the wrapping of general rust packages to provide a vast range of extra
R packages for free.
It would be very nice if we could have some help with RStudio integration including build
testing and CI support.