@thomasgubler It would be easy to add a default value of 0 to the **Subscription** class, we could do something like this:
```c++
template<class T>
Subscription<T>::Subscription(
	List<SubscriptionBase *> * list,
	const struct orb_metadata *meta, unsigned interval = 0) :
}
```

But this would lead to more people setting the minimum delay to 0, which might not be the best.