Function get_const_begin

inst/include/Rcpp/sugar/tools/iterator.h:138–140

    template <typename T>
    inline typename sugar_const_iterator_type<T>::type get_const_begin(const T& obj){
        return get_const_begin__impl( obj, typename is_sugar_vector<T>::type() ) ;
    }
    /* full specialization for character vectors */
    template <>
    inline SEXP* get_const_begin(const CharacterVector& obj){