[Python-3000] Adaptation vs. Generic Functions

[Phillip J. Eby]

At 08:01 AM 4/8/2006 -0700, Guido van Rossum wrote:
>Check out the accelerated version in time_overloading.py in the svn
>sandbox/overloading/. It's mostly faster than the manual version!
>
>Anyway, you seem to be confirming that it's the speed with which we
>can do a cache lookup. I'm not worried about that now.

Btw, the cache should probably hold tuples of weakrefs to types, so as not 
to leak classes in programs that create and discard classes 
dynamically.  (E.g., they create temporary classes in closures that get 
called a lot.)