[PD] Trigger question

[IOhannes m zmoelnig]

On 3/17/21 9:39 AM, adam johnson wrote:
> Sometimes when using trigger I find myself needing to break out of it
> before it completes, simple to work up an abstraction to handle this,
> but it got me to wondering why trigger does not have a right inlet to
> stop the sequence. Looking at the code, trigger is a for loop as
> expected, so it would seem to be a very simple task to add this right
> inlet to allow breaking out of the sequence, is there a reason trigger
> lacks this? Something so simple and obvious never having been done
> suggests I am missing something, is this not as useful as it seems? Am
> I missing something about dataflow?

i think so.

[trigger] is not a loop¹.
it's a device to guarantee order-of-execution.
there are other devices to stop dataflow (e.g. [spigot]), and devices to 
create stoppable loops ([until]), if that is really what you need.

it's hard to say so without an actual example.



fgdmst
IOhannes


¹ as you figured by looking at the code, it is implemented (in C) using 
a for-loop. but that doesn't make it a loop. if you look deeper, you 
might find the for-loop translates to CMP and JMP instructions. that 
doesn't make [trigger] much of a comparator or a a jumper.