[PD] Finding "$0" and dealing with it in messages

[Justin Glenn Smith]

Alexandre Porres wrote:
> hmm, I am sorry, I don't think I got what you meant... could you give an
> example please?
> 
> The way I see is that $1...$n are related to the inheritance concept. They
> could be used inside [send~] & [receive~] objects to force some sort of
> locality, but you can't really guarantee locality by that, it is just some
> way around that is not 100% safe, cause if you have [s $1-gain] in an
> abstraction, and $1 inheriting "A" for instance, a [s A-gain] object in a
> parent patch (or even on another opened patch) would still get the value
> globally.

A frequent pd design pattern is to have a subpatch that wants to, for example,
tell its own subpatch about a unique array name or receive or receive~ object.

The way this is commonly done is to make $0 of the subpatch the first argument
to the subpatch's subpatch.