Method add

include/curl_easy.h:1093–1097

    // Implementation of overloaded add method.
    template<typename Iterator> void curl_easy::add(Iterator begin, const Iterator end) {
        for (; begin != end; ++begin) {
            this->add(*begin);
        }
    }

    // Implementation of overloaded add method.
    template <CURLoption Opt> void curl_easy::add(detail::Option_type<Opt> val) {