[Python-Dev] Skiping searching throw dictionaries of mro() members.
falcon at intercable.ru
Wed Sep 14 20:11:03 CEST 2005
Phillip J. Eby wrote:
> At 09:12 PM 9/14/2005 +0400, Sokolov Yura wrote:
>> We could cash looks by this way:
>> Store with a class its version. Every time after creation when we change
>> a class
>> (add,remove or chage class member, including __base__, __bases__ and
>> mro) ,
>> we increase the version number. Lets call it VERSION
> FYI, there is already a mechanism for new-style classes that notifies
> subclasses of changes to the base class; this mechanism could be used
> to push cache flushes downward, rather than doing version checking
I didn't know it. So, if this thing works, it should be used.
Another think. I do not really know, how emplemented scopes,
but could this caching be applied to a scope realisation?
So we "derive" current scope from his outer and cache all lookups, that
goes out of this scope.
Top scope is "derived" from a module and module it self "derived" from
I think, there not many different deep upper lookups in current
programs, but many reapeating,
and not often we change outer scope, so cache will be fine.
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