[PD] [table] update notification

Lorenzo Sutton lorenzofsutton at gmail.com
Wed Mar 7 15:00:28 CET 2012

On 07/03/12 09:55, Roman Haefeli wrote:
>  Hi all
>  Is there a way to be reliably notified when a table/array changes? My
>  hope is that I don't know of some hidden feature. Is there any?
>  It's easy to catch messages sent to [s arrayname]. However, it's not so
>  easy when data is written through [tabwrite arrayname] or [tabwrite~
>  arrayname] or if the data is drawn manually.
If the arrays are changed by [tabwrite] and/or [tabwrite~] couldn't you 
'intercept' these writes (i.e. changes)? E.g. for messages with one or 
more [change] for signals depending on the logic of the patch, maybe 
[thershold~]... Unless I totally misunderstood your scenario.

>  My current solution is quite a CPU hog: The whole table is scanned in
>  periodic intervals and compared to a reference table, so that any
>  difference will be caught. Of course, this solution comes with a latency
>  (it's a trade-off between avoiding latency and saving CPU cycles).
>  Probably, it could be a wee bit less CPU hungry to make the comparison
>  in the audio domain instead of the message domain, but still it's
>  work-around.
>  Is there a real solution for this around?
>  Roman
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