Hello again
I've stumbled across this by accident and have found it quite useful.
If you create an abstraction that uses creation arguments. if you use $0 as an argument it will pass the containing patches unique ID
to that argument which can be used to address a known $0-receiving-object in the containing patch from within the abstraction. This keeps things local. I've not seen this documented but I sure it will be somewhere.
See attached
Cheers Balwyn

$0-creation-arg.zip

Thanks.

On Mac OS X 10.6 (Pd-0.47-1-64bit) sadly i get the weird error below opening your patch.

main-patch.pd: read failed; Device not configured

@Jojo-Lapin Thanks for checking. I've just tried it on Windows 10 Pd-o.47.0 and got a similar error
"main-patch.pd: read failed; Bad file descriptor". So it looks like a pd-extended only use
Cheers
Balwyn

Hold on everybody!
It's the $0 in the folder name causing the error

dollar-zero-creation-args.zip

Yep, works fine now.

$0 is just a number, so this should work reliably across all systems.

You can similarly hand down creation arguments from one abstraction to another using $1 $2... as the creation arguments. So if I create the abstraction [george 10 20 30], and [george] contains the abstraction [ringo $1 $3], then [ringo] will have the creation arguments 10 and 30.

hi,
i use this method very often. if you wonder how to create abstractions with $0 arguments dynamically, you can do it with a little hack using zexy/makesymbol like this:

[$(
[list 0]
[zexy/makesymbol %s%s]
[obj 100 100 myabs $1(

dynamicdollararg.zip

this makes polyphonic/granular abstractions very easy to handle.

cheers!

@solipp You can also do that vanilla-style like this:

[0(
|
[makefilename $%s]
|
[obj 100 100 myabs $1(

@Maelstorm good to know, thanks for the hint!