----- Original Message -----
> From: Martin Peach <[email protected]>
> To: Jonathan Wilkes <[email protected]>
> Cc: IOhannes m zmoelnig <[email protected]>; "[email protected]" <[email protected]>
> Sent: Wednesday, February 15, 2012 4:49 PM
> Subject: Re: [PD] constants
>
> On 2012-02-15 16:11, Jonathan Wilkes wrote:
>> Let's go back:
>>
>> Instead of time units, let's take the incoming single-selector
> "pi" and replace it with
>> the float value of pi for any object that doesn't have a "pi"
> method or an
>> "anything" method (but does have a float method). Furthermore,
> if a class defines a
>> float argument but the argument provided isn't a float, then check
> first if what it received
>> was A_SYMBOL 'pi' and if so replace with the float value of pi.
>>
>> Is what I wrote above possible to do without causing huge problems to
> performance or
>> creating ambiguities? Is it something people would look at as a feature,
> or a nuisance that
>> makes it harder to learn Pd? If the answer is that something like this
> constant expansion
>> is a bad idea then there's no point discussing macro expansion for time
> units.
>>
>> -Jonathan
>
> I think it's a bad idea to make assumptions like that. It would be far
> better to interpose a filter when needed. I attach a pdlua script [str2ms]
> that
> will output a float millisecond value given some kind of string specifying
> time.
> It's very easy to extend to other time types and only needs to be used if
> you want it, not like some secret apple troll lurking inside the object that
> "knows" what I want.
But "what you want" in this case is necessarily always an error to the console,
without the possibility of doing something else instead.
Is there a way to give the user an option of what happens, like:
[badarg pi 3.14...] <-- if the bad arg is "pi" substitute 3.14... and create
the object
-Jonathan
>
> Martin
>
_______________________________________________
[email protected] mailing list
UNSUBSCRIBE and account-management ->
http://lists.puredata.info/listinfo/pd-list
