From these examples and from most I've seen on this list including mine, one can get the impression that send is useful only for repeated execution, a sort of glorified idle. However, send can be used to build timeouts, delays, activity sensors (retrigerable oneshots for you electronics types) and other mechanisms, even in concert with callbacks, such as sockets callbacks. These message machines, as I call them, can be used to interact with other message machines.
Dar Scott
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