Closed rambocoder closed 12 years ago
Checks if the new subscriber pid is already subscribed and do not add it to the list of subscribers more than once.
On second thought, the function name could be called: add_subscriber_if_not_subscribed(NewSubscriber, Subscribers)
Checks if the new subscriber pid is already subscribed and do not add it to the list of subscribers more than once.
On second thought, the function name could be called: add_subscriber_if_not_subscribed(NewSubscriber, Subscribers)