Calling C or C++ for R

Package development
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My guess is most R users want to use Rcpp to manipulate numeric structures, not R -language elements- so Rcpp is very optimized and tested for these cases. So what choices you feel are optimal for a purrr or an rlang may or may not be the same for other users on more common tasks.

I said: "Rcpp is absolutely recommended for most cases".

I doubt core- R members dis-recommend it.

They (at least Luke and Tomas) dis-recommend using C++.