From: Jacob Fugal <lukfugl@...>
Date: 2005-04-07T06:17:03+09:00
Subject: Re: new!

On Apr 6, 2005 2:24 PM, Boris Glawe <boris@boris-glawe.de> wrote:
> The difference is speed!! I have an algoithm that runs 5 seconds with c++
> and 16 minutes with ruby on my machine. The speed "problem" exists with
> all skripting languages (perl,php, etc), it's not ruby's fault.

While I won't dispute the relative slowness of scripting languages
compared to compiled languages, I must assume you made a typo. 16
minutes?! I copy the script you paste below into a file and run it and
it takes fractions of a second. Possibly benchmarking it for 10^X
iterations will take longer than C, but not by 2 orders of magnitude
(5 seconds to 960 seconds). Probably 5 seconds versus 16 *seconds*
when benchmarked?

I'm too lazy to actually perform the benchmark myself, but felt it
necessary to call this to attention...

Jacob Fugal

(ruby version included below for reference)

> #!/usr/bin/ruby
> 
> class Base
>         attr_reader :var
> 
>         def initialize(v)
>                 @var = v
>         end
> 
>         def increase
>                 @var = @var + 1
>         end
> end
> 
> class Derived < Base
> 
>         attr_reader :text
> 
>         def initialize(x, t)
>                 super(x)
>                 @text = t
>         end
> 
>         def append(t)
>                 @text = @text + t
>         end
> 
> end
> 
> d = Derived.new(5, "hallo")
> d.increase
> 
> print d.var.to_s +  "\n"
> print d.text + "\n"
> 
> d.append("bye")
> 
> print d.text + "\n"