From: Robert Klemme <shortcutter@...>
Date: 2008-11-19T16:46:22+09:00
Subject: Re: ruby global regex question.

On 19.11.2008 07:08, Einar Magnús Boson wrote:

> 
> That is pretty much how, except globals are hardly thread safe I  
> think.

$1 and the like are

robert@fussel ~
$ ruby -e '2.times{|i|Thread.new(i){|ii|4.times{/(\d+)/=~ii.to_s;puts 
$1;sleep 1}}};sleep 5'
0
1
1
0
1
0
1
0

robert@fussel ~
$

> Use scan instead of gsub:

Right, as far as I can see no replacements should be done.  Just read 
only access.

html_source.scan %r{<table>(.*?)</table>}i do
   table_souce = $1
   index_number = table_source[%r{Index\s+(\d+)}, 1].to_i

   table_source.scan %r{<tr>(.*?)</tr>}i do
     do_something_with $1, index_number
   end
end

But a proper HTML parser is probably much better. :-)

Kind regards

	robert