[PD] symbol anxiety
Phil Stone
pkstone at ucdavis.edu
Tue Feb 24 17:42:28 CET 2009
Phil Stone wrote:
> Mathieu Bouchard wrote:
>
>> On Mon, 23 Feb 2009, Roman Haefeli wrote:
>>
>>> for instance, when using OSC, probably every message is a new symbol.
>>> so i guess, it cannot be avoided, even if text processing is done
>>> outside of pd, unless a string type is introduced (is that correct?).
>>>
>> Every OSC target is a symbol, just like every receive-symbol is a
>> symbol; but furthermore, even hierarchical names like /foo/bar are
>> recorded as a single name that doesn't use "foo" and "bar", instead of
>> using a list. Similarly, abstraction instances are _the_ way to flood
>> the table, as all the local receive-symbols and other local symbols
>> get multiplied by the number of instances.
>>
>> I proposed several solutions to this. Having deallocatable symbols
>> only is useful if you deallocate abstractions and reallocate them...
>> usually has to do with dynamic patching. The other solution would be
>> to make the symbol-table only a table of symbols, and have a separate
>> receiver-table, which would get accessed by ($0,symbol) pairs so that
>> the $0 doesn't get pasted inside of the symbol so that no more symbols
>> need be generated. That would be quite a major overhaul, but it's
>> pretty much the only real solution.
>>
>> I don't think that there's anything else in OSC that could be wasting
>> symbols. However, if you have a system where you use 1000000 OSC-paths
>> to represent an array of 1000000 numbers, you may be looking for trouble.
>>
>
> Since OSC messages have some value concatenated to the end, aren't they
> all potentially unique and therefore consumers of new symbols? E.g.,
> "/oscillator/frequency 440.0" and "/oscillator/frequency 449.365"
> require distinct symbols, don't they? And to think I was worried about
> a little stopwatch! :-)
>
>
On further reflection, the OSC path (which *is* a symbol) and the value
(which *may* be a symbol, but is more typically a float) are two list
items, so the answer to my question is no, I think.
Phil
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