From: Julian Leviston <julian@...>
Date: 2009-02-09T00:09:52+09:00
Subject: Re: Ruby vs Perl performance

You could also look into The project to concert ruby to obj-c which is  
compiled. Am I dreaming? I can't remember the name

Blog: http://random8.zenunit.com/
Learn rails: http://sensei.zenunit.com/

On 08/02/2009, at 10:09 AM, "William James" <w_a_x_man@yahoo.com> wrote:

> William James wrote:
>
>> Vetrivel Vetrivel wrote:
>>
>>> I have downloaded perl and ruby program in net.I run both the
>>> programs.But the Ruby program performance very wost than perl.Can
>>> any one tell me the reasons and
>>> soultion to make ruby as faster than perl.
>>> I have attached perl program.
>>>
>>>
>>> #!/usr/local/bin/ruby
>>>
>>> BAILOUT = 16
>>> MAX_ITERATIONS = 1000
>>>
>>> class Mandelbrot
>>>
>>>        def initialize
>>>                puts "Rendering"
>>>                for y in -39...39 do
>>>                        puts
>>>                        for x in -39...39 do
>>>                                i = iterate(x/40.0,y/40.0)
>>
>> Don't indent so deeply.  It makes the code much harder to read.
>>
>> Don't write a mandelbrot program in an interpreted language.
>> Write it in a compiled language like OCaml.
>
> OCaml:
>
> let bailout = 16.0
> let max_iterations = 1000
>
> let iterate x y =
>  let cr = y -. 0.5  and
>      ci = x  and
>      zi = 0.0  and
>      zr = 0.0  in
>  let rec iterate2 zi zr i =
>    if i > max_iterations then
>      0
>    else
>      let temp = zr *. zi  and
>        zr2 = zr *. zr  and
>        zi2 = zi *. zi  in
>      if zi2 +. zr2 > bailout then
>        i
>      else
>        iterate2 (temp +. temp +. ci) (zr2 -. zi2 +. cr) (i + 1)
>  in
>  iterate2 zi zr 1
>
> let mandelbrot =
>  for y = -39 to 38 do
>    print_endline "";
>    for x = -39 to 38 do
>      let i = iterate
>        (float_of_int x /. 40.0) (float_of_int y /. 40.0) in
>      print_string ( if 0 = i then "*" else " " )
>    done
>  done
>
>
> let _ = mandelbrot
>