Hi, Adam T. Lindsay hat gesagt: // Adam T. Lindsay wrote:
I was wondering if there's a regular way of extracting the head and the tail (meaning everything but the first element... think car/cdr) of an arbitrary list message. I'm rooting through the docs, and am not able to come up with an elegant way of doing this. (looked through the past two months of archives, and didn't find much)
I think, the "cdr" part doesn't exist, but I would be very happy if I'm going to be proved wrong. Maybe ZEXY has some things inside to handle "cdr" cases, but I'm not that familiar with ZEXY.
Why do I want to do this? I'm trying to write an abstraction that takes in a netreceive and dispatches it to a receiver that's labelled with the first name in the list, e.g. a netsend of:
foo bar baz;
...results in a message of "bar baz" being sent to [r foo].
You might want to explore ";"-messages, like the well known [; pd dsp 1(
They work like named sends. If you have a colon message like:
[; $1 $2(
and you send it a list with, say, "volume 17" a receiver [r volume] will get the value "17".
I have a hack with a set number of arguments making heavy use of [trigger], variable substitution, and "add2" and "set" message boxes, but I can't get it to work with arbitrary-length messages.
Wll, with arbitrary lenght messages, the ";" trick will fail. You might get a bit farther with [textfile]
ciao,
Frank Barknecht _ ______footils.org__