From: Robert Dober <robert.dober@...>
Date: 2007-07-24T22:16:15+09:00
Subject: Re: Static variables in Ruby.

On 7/24/07, Jeremy Henty <onepoint@starurchin.org> wrote:
> On 2007-07-24, Robert Dober <robert.dober@gmail.com> wrote:
> > On 7/24/07, Jeremy Henty <onepoint@starurchin.org> wrote:
> >>
> >> class Foo
> >>   count = 0
> >>   define_method(:foo) { count += 1 }
> >> end
> >
> > Terribly slow BTW :(
>
> Why is that?  Are all methods created by define_method slow?  Or is it
> something particular to the way I'm using it here?  I'm really getting
> into metaprogramming with define_method so I'd like to learn about the
> pitfalls.
>
> Regards,
>
> Jeremy Henty
>
>
No it is the lookup, if you are interested I can send you my
benchmarks, without any twists it was 4 to 5 times slower than ivar
lookup and with twists like read_only, write_once, rw_locks it quickly
climbed to a factor worse than 10 :(
Robert

-- 
I always knew that one day Smalltalk would replace Java.
I just didn't know it would be called Ruby
-- Kent Beck