Like a reactor, but supplying IEventSources instead of callbacks
May be implemented using a callback on IScheduler.now that calls a
reactor's iterate() method with a delay of IScheduler.time_available()
seconds. Note that all returned event sources are active only so long
as a reference to them is kept. If all references to an event source go
away, its tasks/callbacks will not be called.
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Methods
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exceptional
readable
writable
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exceptional
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exceptional ( stream )
IEventSource that fires when stream is in error/out-of-band
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readable
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readable ( stream )
IEventSource that fires when stream is readable
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writable
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writable ( stream )
IEventSource that fires when stream is writable
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