From: martinus <martin.ankerl@...>
Date: 2004-12-29T07:31:48+09:00
Subject: Re: help on making ruby code faster

Hi! I have played a bit with your code, the result is now about 55%
faster. I have replaced your internal string representation (the @val)
with an integer, wich makes the code both simpler and faster. The
from_base36 method has also changed, it now looks like this:

def self.from_base36(val)
val = val.downcase
raise ArgumentError unless val =~ /\A[a-z][a-z0-9]{24}\z/
n = 0
val.each_byte do |c|
n = n*36 + @@rd36[c]
end
Guid.new(n)
end

Now the most time consuming task is each_byte, which takes about 60% of
the CPU.

Here is the full sourcecode:
http://martinus.geekisp.com/files/guid.rb

Martin