Re: Method call optimization.

[David L. Nicol]

Graham Barr wrote:
> 
> On Thu, Aug 10, 2000 at 06:26:24PM -0400, Chaim Frenkel wrote:
> > >>>>> "NI" == Nick Ing-Simmons <[EMAIL PROTECTED]> writes:
> >
> > NI> You just re-invented "look up the name in a hash table" ;-)
> >
> > I thought I was saving the constant search along the @ISA, do it only
> > once.
> 
> Well perl5 already does that. The first time a method is called it searchs
> ISA, but it caches the result in the package the object is blessed
> into, so next time it finds it without searching ISA
> 
> Graham.


One assumes that if you redefine (@ISA) perl5 throws away this cache?


If D isa C isa B and D looked up method f and found it in B's methods,
then C redefines itself as an A, does perl5 figure out to throw away
D->f ?

I mean, who redefines ISA at  run time?  People who are frustrated
that the OS won't let them write self-modifying assembly programs
anymore?





And how did Ing-Simmons get on the reply-to-all CC list twice?


-- 
                          David Nicol 816.235.1187 [EMAIL PROTECTED]
:wq