Function is_null

Source/Utils/json.hpp:18891–18894

! @brief return whether value is null This function returns true if and only if the JSON value is null. @return `true` if type is null, `false` otherwise. @complexity Constant. @exceptionsafety No-throw guarantee: this member function never throws exceptions. @liveexample{The following code exemplifies `is_null()` for all JSON ty

        @since version 1.0.0
        */
        constexpr bool is_null() const noexcept
        {
            return m_type == value_t::null;
        }

        /*!
        @brief return whether value is a boolean