Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Fri, 28 Jun 2013 13:50:08 -0500

Hi Lewis,

On 2013-06-28 J. Lewis Muir wrote:
> I don't get why one would care about removing all listeners that match.
> I can't think of a scenario where it would make sense to add more than
> one listener/pvt pair.  To me, if someone does that, it's a bug.  I'd be
> fine with the name still singular and it removing the first matching
> listener/pvt pair:

It may be a bug to do that, but all it takes is a subsystem that doesn't have 
its own "already initialized" variable being started up twice.  By deleting 
all matching listeners and returning how many there were I'm making the 
resulting code more robust against that kind of error while also allowing the 
problem to be detected by the caller if s/he so desires.  If you want to be 
able to delete your listeners separately, pass a different value for the 
private argument for each one.

- Andrew
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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System