[PD] Default symbol if not set by arg

[Enrique Erne]

hi chris

[list append $1]
|
[sel 0]

detects empty arguments and outputs floats _and_ symbols

regards eni



On Apr 24, 2006, at 3:49 PM, Hans-Christoph Steiner wrote:

>
> On Apr 24, 2006, at 12:51 PM, Chris McCormick wrote:
>
>> Hey All,
>>
>> When taking integer arguments in an abstraction, it's nice sometimes  
>> to
>> set a default if the argument is not set. For this you can do  
>> something
>> like:
>>
>> [$1]
>> |
>> [select 0]
>> |      /
>> [45(  /
>> |    /
>> [f   ]
>>
>> Or maybe something even simpler.
>>
>> I would like to do something similar for symbolic arguments. I.e. if
>> an argument is supplied, use it, otherwise use some default or take
>> some other action. Unfortunately there seems to be no way to detect an
>> 'empty' symbol. Has anyone got any ideas?
>
> You want [float_argument], [symbol_argument], and [any_argument], in  
> CVS: abstractions/purepd
>
> This is how you test for a blank symbol:
>
>
> |            [loadbang]
> |             |
> |            [symbol]
> |             |
> [select symbol]
> |             |
>
> .hc
>
>
>
>
>>
>> Best rgds,
>>
>> Chris.
>>
>> -------------------
>> chris at mccormick.cx
>> http://mccormick.cx
>>
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