Function union_

inst/include/Rcpp/sugar/functions/setdiff.h:178–180

// we cannot use "union" because it is a keyword
template <int RTYPE, bool LHS_NA, typename LHS_T, bool RHS_NA, typename RHS_T>
inline Vector<RTYPE> union_( const VectorBase<RTYPE,LHS_NA,LHS_T>& lhs, const VectorBase<RTYPE,RHS_NA,RHS_T>& rhs ){
    return sugar::Union<RTYPE,LHS_NA,LHS_T,RHS_NA,RHS_T>( lhs.get_ref(), rhs.get_ref() ).get() ;
}