From: Emmanuel Oga <oga_emmanuel_oga@...>
Date: 2007-06-15T05:36:32+09:00
Subject: Re: Runtime disparity - Same program in Perl and Ruby

Kaldrenon wrote:
> Hi all (this is going to comp.lang.ruby and comp.lang.perl.misc),
> 
> The other day I wrote a basic program in Perl, and the following day I
> rewrote it in Ruby. I'm curious about the differences in runtime of
> the two versions, though.
> 

It would help to have a view into the input file an to know what your 
program should do. Im sure there has to be another way to code your 
problem, and im pretty sure that constructs as the following can and 
should be avoided:

 Find.find("(path)") do |file|
    if !(FileTest.file?(file)) || !(File.basename(file) =~ /^[\d\w\S]+_
\d{3}/)
      next
    else
      filecodes.each_key do |target|
        if(file =~ /#{target}/)
          puts "found " + target + " at " + file
          $stdout.flush
          fail = 0
          for i in 0..filecodes[target].size-1 do
            if(filecodes[target][i] != "empty" &&
            File.basename(file) == File.basename(filecodes[target]
[i]))
              fail = 1
              break
            end
          end
          if fail == 0
            if filecodes[target][0] == "empty"
              filecodes[target][0] = file
            else
              filecodes[target].push(file)
            end
          end
        end
      end
    end
  end

This is both difficult to read and error prone.

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