[PD] object that blocks stream of numbers unless new values arrive?

[altern]

jurgen(e)k dio:
> what about [change] ?

dohhh! i did not see that one, i was searching the externals and 
abstractions ...

> without asking the list you find a lot of clues by following the discussions on the 'hurleur' forum and analyzing posted patches there. that's what I do anyway.

thanks!
it would be nice to have a kind of blog where all externals with short 
description would be listed, but i guess this is really difficult 
because there are quite a few of them

> 
> On Nov 14, 2009, at 2:19 AM, altern wrote:
> 
>> hi
>>
>> is there a spigot type of object that blocks numbers from a stream
>> unless the value is different than the previos one that arrived?
>>
>> i just want to avoid reinventing the wheel... i am using pd extended
>> right now so if any library there has something like this it would be
>> nice to know.
>>
>> btw. is there anywhere i can check this kind of things without asking the list?
>>
>> thanks
>>
>> enrike
>>
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>