Method is_structured

include/boost/json/value.hpp:1330–1337

Checks if this is an @ref array or an @ref object. This function returns `true` if @ref kind() is either `kind::object` or `kind::array`. @par Complexity Constant. @par Exception Safety No-throw guarantee. */

        No-throw guarantee.
    */
    bool
    is_structured() const noexcept
    {
        // VFALCO Could use bit 0x20 for this
        return
           kind() == json::kind::object ||
           kind() == json::kind::array;
    }

    /** Check if this is not an @ref array or @ref object.