From: Florian Gross <flgr@...>
Date: 2005-02-10T09:05:07+09:00
Subject: Re: How to mimic Perl's `s///' in Ruby?

Assaph Mehr wrote:

>>raise "String error: #{str}" unless /^(\d+)\s+(.*)$/ =~ str
>>pid, name = $1, $2
> 
> One thing I've wondered about: is this thread safe? Is there a chance
> that between the first and second statements something will change the
> result of the global variables?

They are thread-global variables. The same applies for $_.

I still prefer this form for complex matches, though:

if md = re.match(str) then
   capture1, capture2 = md.captures
   ...
end