[PD] Testing for empty creation args?

[Hans-Christoph Steiner]

So I tried to use this within an abstraction, so it is reusable.   
Unforunately, the $1 gets initialized to 0 before it is sent to the  
abstraction, so this technique doesn't work as is.

Any ideas for how to make it work?

.hc

On Oct 24, 2008, at 11:24 AM, Jack wrote:

> This a very nice method, thanx.
> But there is something strange in this abstraction according to the
> help page about [list].
> I can read [list] short for [list append] but this is not true.
> In this abstraction if you replace [list append] by [list] and you
> enter a 'symbol' as argument, you have this error :
>   list $1
> ... couldn't create
> This is just a remark.
> ++
>
> Jack
>
>
> Le 14 oct. 08 à 13:56, IOhannes m zmoelnig a écrit :
>
>> Frank Barknecht wrote:
>>> Hallo,
>>> Bill Gribble hat gesagt: // Bill Gribble wrote:
>>>> I am doing something like this:
>>>>
>>>> |loadbang|
>>>> |
>>>> |symbol $1|
>>>> |
>>>> |readfile $1 cr, rewind(
>>>> |
>>>> |textfile|
>>>>
>>>> There's also an interface to set the filename later.
>>> Use this instead:   [list append $1]
>>>   |
>>>   [select 0]
>>>   |        \
>>>   [nofile(  [s $0-FILENAME]
>>>   |          [s $0-FILENAME]
>>
>>
>> since this does not differentiate between no args and "0", i prefer
>> the attached version (too complicated for ascii art)
>>
>> fmgasdr
>> IOhannes
>>
>>
>>> Ciao
>>
>> #N canvas 351 18 450 490 10;
>> #X obj 187 246 list append \$1;
>> #X msg 138 131 bang;
>> #X obj 134 202 select s;
>> #X obj 134 152 t b b;
>> #X obj 242 179 makefilename $%d-test;
>> #X obj 134 179 symbol \$1-test;
>> #X msg 242 159 1;
>> #X obj 187 224 t b;
>> #X obj 8 292 t b;
>> #X text 15 312 no arg given;
>> #X text 217 225 this is \$1;
>> #X obj 8 332 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1
>> -1;
>> #X obj 187 279 print arg1;
>> #X connect 0 0 12 0;
>> #X connect 1 0 3 0;
>> #X connect 2 0 8 0;
>> #X connect 2 1 7 0;
>> #X connect 3 0 5 0;
>> #X connect 3 1 6 0;
>> #X connect 4 0 2 1;
>> #X connect 5 0 2 0;
>> #X connect 6 0 4 0;
>> #X connect 7 0 0 0;
>> #X connect 8 0 11 0;
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>
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