Function extendr_api::wrapper::rstr::charsxp_to_str

pub(crate) unsafe fn charsxp_to_str(charsxp: SEXP) -> Option<&'static str>

Returns a rust string-slice based on the provided SEXP, which is of type [SEXPTYPE::CHARSXP]. Note that the length of a CHARSXP is exactly the number of non-null bytes in said R character.