Jonathan Wilkes <[email protected]> wrote:
> > >--- On Fri, 7/8/11, Ivica Ico Bukvic <[email protected]> wrote: > >> From: Ivica Ico Bukvic <[email protected]> >> Subject: RE: [PD] route - pack issue >> To: "Jonathan Wilkes" <[email protected]> >> Cc: [email protected] >> Date: Friday, July 8, 2011, 8:12 PM >> >> >> Jonathan Wilkes <[email protected]> >> wrote: >> >> > >> > >> >--- On Fri, 7/8/11, Ivica Ico Bukvic <[email protected]> wrote: >> > >> >> From: Ivica Ico Bukvic <[email protected]> >> >> Subject: RE: [PD] route - pack issue >> >> To: "'Jonathan Wilkes'" <[email protected]> >> >> Cc: [email protected] >> >> Date: Friday, July 8, 2011, 4:54 PM >> >> > static void pack_list(t_pack *x, >> >> t_symbol *s, int ac, t_atom *av) >> >> > { >> >> > if (ac==0) >> >> > pack_bang(x); >> >> > else >> >> > >> >> obj_list(&x->x_obj, 0, ac, av); >> >> > } >> >> >> >> >> >> Many thanks for this contribution! I will add this >> to >> >> pd-l2ork. However, shouldn't also route output >> bang when >> >> having an empty list? >> > >> >[route] already does this. >> >> But I thought OP suggested [route start] -> [pack] did >> not work since pack received empty list instead of bang and >> did not know what to do with it. > >Well, [route] isn't the only one that can output an empty list-- the >[list] family objects, [trigger], and probably others do, too. > >Anyway, I think there are only some special cases where this gets >tricky: when an object class defines both a bang method and a list >method like [pack] does, or with an object like [route] which just has >a list method as a catchall in which "bang", "float", and "symbol" >messages are parsed manually. > >Otherwise, Pd does some automagic message conversion (defined in >m_class.c) so that, for example, if [foo] only has a "bang" method and >no list method, it will just call the "bang" method when an empty list >is received at its inlet. So one needn't worry whether or not an >object outputs an empty list, just if the special case objects like >[pack] and [route] handle them correctly. So, are you suggesting therefore that route needs to be fixed as well or just pack? > >-Jonathan > >> >> > >> >> >> >> Best wishes, >> >> >> >> Ico >> >> >> >> >> >> >> Ivica Ico Bukvic, D.M.A >> Composition, Music Technology >> Director, DISIS Interactive Sound & Intermedia Studio >> Director, L2Ork LinuxLaptop Orchestra >> Assistant Co-Director, CCTAD >> CHCI, CS, and Art (by courtesy) >> Virginia Tech >> Department of Music >> Blacksburg, VA 24061-0240 >> (540) 231-6139 >> (540) 231-5034 (fax) >> disis.music.vt.edu >> l2ork.music.vt.edu >> ico.bukvic.net >> Ivica Ico Bukvic, D.M.A Composition, Music Technology Director, DISIS Interactive Sound & Intermedia Studio Director, L2Ork LinuxLaptop Orchestra Assistant Co-Director, CCTAD CHCI, CS, and Art (by courtesy) Virginia Tech Department of Music Blacksburg, VA 24061-0240 (540) 231-6139 (540) 231-5034 (fax) disis.music.vt.edu l2ork.music.vt.edu ico.bukvic.net _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
