Hallo, derek@x-i.net hat gesagt: // derek@x-i.net wrote:
Quoting Frank Barknecht fbar@footils.org:
Yes, but $0 is special in that it is replaced by a unique number for each abstraction (not for each subpatch!).
ok, now i am a bit confused ;-) how does this work? where does the variable for this $ come from then?
It's internal to Pd. I cannot test right now, but I think, that the first $0 used when Pd is running internally is replaced with 1000, the second with 1001 and so on. But this might change in the future. What is important is that $0 is really unique for an abstraction. I use this a lot to let patches have local values. For example, you can name a table $0-settings and then store local settings in it. The abstraction then can be used multiple times and still each one has their own settings table that does not interfere with the others. Also local send and receive is a common usage: [s $0-note] and [r $0-note] will not send globally through patch boundaries but only inside one abstraction.
Another trick, to end this list, is to combine $x-arguments and $0 together with makefilename. Say you want to give an argument to an abstraction but also use this for some local operations. You can then use:
[f $1] | [makefilename $0-%d] | ... do something with $0-$1
This can give headaches, but it's very cool sometimes. ;)
ciao
Frank Barknecht _ ______footils.org__