[PD-dev] from t_symbol to t_class

[IOhannes zmölnig]

On 01/12/2013 12:04 AM, Jonathan Wilkes wrote:
>>>> In C would I just make a struct with fields of t_symbol,
>>>>
>>>> t_class, and a pointer to link to the next one?
>>>
>>>
>>> Yeah, a linked list would work fine, probably not as efficient as the c++ hash structure (but lots easier to maintain).  One nit-to-pick:  Use a t_class pointer, which is a t_pd.
>
>
> Hm... since the code to add new classes to the list will probably
> end up looking exactly like the code to add symbols to the
> symbol table, what if I just bloat the _symbol struct by adding
> a t_class *s_class?  Would that affect performance?

it would break binary compatibility.

there's no good reason to add hash-like lookups to t_symbol (your only 
reason is convenience).
true, there's an s_thing there, but that's mainly for performance 
reasons (looking up symbol->class mappings is usually outside a 
performance critical path)(and having s_thing in t_symbol is very ugly)


>
> Then searching for an existing class would be easy-- just do
> a gensym and check if its s_class exists.
>

but checking whether a class exists, is as simple as calling zgetfn on 
pd_objectmaker.
i think this is _quite_ easy.


fgmasdr
IOhannes