From: Phrogz <gavin@...>
Date: 2005-08-19T03:36:15+09:00
Subject: Re: Idiomatic ruby version of this code?

Slightly more DRY (and yes, I'd use this myself):

mappings = { '.mp3' => '.temp', '.temp' => '.mp3' }
mappings.each{ |orig_ext, new_ext|
  Dir[ "*#{orig_ext}" ].each{ |filename|
    File.rename( filename, File.basename( filename, orig_ext ) +
new_ext )
  }
}