Method IsDefined

library/cpp/json/ordered_maps/json_value_ordered.h:169–171

Checking for defined non-null value

        // Checking for defined non-null value
        bool IsDefined() const noexcept {
            return Type != JSON_UNDEFINED && Type != JSON_NULL;
        }

        bool IsNull() const noexcept;
        bool IsBoolean() const noexcept;