[PD] fundamental hot/cold midi question

[Hans-Christoph Steiner]

On Sep 26, 2007, at 11:57 AM, Stephen Sinclair wrote:

>> Right now I'm pretty confused. What did I miss? In retrospect, it  
>> seems
>> very odd to me that switching the lines sending velocity ad note  
>> in arp
>> would have any effect. I would expect those to lines to happen
>> "simultaneously" at least from interconnected pd-objects point of  
>> view.
>
> Personally I consider this to be a somewhat fundamental problem in Pd:
> There is actually no way, looking at an outlet with several lines
> coming out of it, to determine what order they will trigger.  It
> actually depends on what order you connected them in.
> To me this is important information that is simply _missing_ in Pd's
> graphical representation.
>
> Note that this is not true in Max/MSP: messages are always triggered
> from right to left.
>
> It would be nice to fix it, but unfortunately doing so would probably
> affect backwards-compatibility with people's patches.
> Anyways, if you have something which absolutely depends on the order
> in which a message is sent out multiple connections, insert the [t]
> object to re-trigger the same message several times, and make one
> connection per outlet.  Messages will be ordered from right to left.
>
> My patches are just full of triggers like this.

Graphical execution order is a much worse problem than Pd's  
'undefined' execution order of connections.  It is far too easy to  
break a patch by moving bits around, and then it would be very  
difficult to debug.  Graphical execution order was explicitly removed  
from Pd because of the trouble it caused.

If you need to have a specific execution order, then you should use a  
[trigger].  It makes it explicit, which is a good thing.

.hc


>
> Steve
>
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