From: Robert Dober <robert.dober@...>
Date: 2008-05-23T01:42:51+09:00
Subject: Re: Prevent ruby constant variables from changing?

On Thu, May 22, 2008 at 6:05 PM, ara.t.howard <ara.t.howard@gmail.com> wrote:
>
> On May 22, 2008, at 9:39 AM, Robert Dober wrote:
>
>> c.module_eval creates faster code though...
>
> really?  that's interesting.
You are right I better recheck that ...
... indeed I was wrong, I just increased N from 10**5 to 10**6 and
that equals out what must have been measurement fluctations caused by
the extremely short runtime.
The performance is equal.

require 'benchmark'

class A
  def a; 42 end
end
a = A.new
B = Class::new
B.module_eval do
  def a; 42 end
end
b = B.new

N=100_000

Benchmark::bmbm do |bm|
  bm.report( "classic" ) do
    N.times do
      a.a
    end
  end
  bm.report( "meval" ) do
    N.times do
      b.a
    end
  end
end
R.