Interface to be implemented by a receivers implementation.
The implementation should also have a default constructor.
NOTE: There is no need to internally synchronize the caller
handles that.
NOTE: This datastructure should have Set semantics.
i.e. attempts to add a subscriber that is already
present should be ignored. Or more explicitly
a subscriber should present zero or once.
author: Adrian Brock version: $Revision: 57198 $ |