Function Rcpp_PreserveObject

inst/include/RcppCommon.h:100–103

begin deprecated interface not using precious list use Rcpp_PreciousPreserve + Rcpp_PreciousRelease below it

    // begin deprecated interface not using precious list
    // use Rcpp_PreciousPreserve + Rcpp_PreciousRelease below it
    inline SEXP Rcpp_PreserveObject(SEXP x) {
        if (x != R_NilValue) R_PreserveObject(x);
        return x;
    }
    inline void Rcpp_ReleaseObject(SEXP x) {
        if (x != R_NilValue) R_ReleaseObject(x);
    }