From: Florian Gross <flgr@...>
Date: 2005-02-10T06:25:06+09:00
Subject: Re: How to mimic Perl's `s///' in Ruby?

Glenn Parker wrote:

> Closer to the original Perl:
> 
>   line = "123 foo"
>   line.sub!(/^(\d+)\s+/, '')
>   pid = $1
>   puts line, pid

line = "123 foo"
pid = line.slice!(/\d+/, 1).to_i
puts line, pid

..slice!() is the in-place version of [] that will delete the matched 
stuff as well as returning it. Note that you can use Regexps with [] and 
even []=.

str = "hello world"
str[/.(.)/, 1] # => "e"
str[/\s(.+)/, 1] = "bar"
str # => "hello bar"