Boost.URL boost::urls::param_view::param_view home boost::urls::param_view::param_view Constructor Synopsis Declared in header <boost/url/param.hpp> constexpr param_view() = default; Description Default constructed query parameters have an empty key and no value. Example param_view qp; Postconditions this->key == "" && this->value == "" && this->has_value == false Complexity Constant. Exception Safety Throws nothing.