fn checked_vec_try_from_sexp_numeric<T>(sexp: SEXP, param: &str) -> Vec<T>where i32: TryCoerce<T>, f64: TryCoerce<T>, <i32 as TryCoerce<T>>::Error: Debug, <f64 as TryCoerce<T>>::Error: Debug,
Generic strict vector conversion: only INTSXP and REALSXP allowed.