[PD] Testing for empty creation args?

[Matt Barber]

Dear Hans and List:

Attached is a .zip of a possible solution.  You can unzip and open
"getcreationargstest.pd".  In this patch, you'll find a
[getcreationargstest_abs] abstraction with a bunch of float and symbol
arguments.  Open it up and have fun -- [getcreationargs] is the main
abstraction -- there are two dependencies: 1) [digiter] which is an
abstraction that iterates the digits of an integer, and 2) [log10]
which is a base-ten log abstraction used in [digiter].

There are some downsides to it:

1)  it requires helper abstractions.
2)  it requires a helper subpatch in the parent (the name of this
patch is the creation argument to [getcreationargs].
3)  it uses some rather arcane dynamic patching which might break in the future.
4)  when it's used it sets the dirty flag.


I think this could at least be something like the right idea....  also
I haven't tested on all platforms, and it's for 0.40 or greater.

Lemme know what you think!

Matt


> Date: Sun, 23 Nov 2008 23:16:57 -0500
> From: Hans-Christoph Steiner <hans at eds.org>
> Subject: Re: [PD] Testing for empty creation args?
> To: Jack <jack at rybn.org>
> Cc: pd-list at iem.at, IOhannes m zmoelnig <zmoelnig at iem.at>
> Message-ID: <28F600A9-504A-4289-82EC-91C996AD5E10 at eds.org>
> Content-Type: text/plain; charset=ISO-8859-1; delsp=yes; format=flowed
>
>
> 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 ? 13:56, IOhannes m zmoelnig a ?crit :
>>
>>> 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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