I’ve been listening to David Heinemeier Hansson talk on the "Ruby on Rails" project (download the talk here). I really like his summary of Ruby slide which he calls "Ruby in five E’s".

I’ll reproduce his summary here:

• Everything is an object

    5.times do print "hello world".capitalize end
  

• Elegant blocks gives inline power

    db.select_all(sql).inject([]) do |objects, row|
      objects << instantiate(row)
    end
  

• Exploring with reflection
• Extending at runtime (even standard lib!)
• Extensive standard library
  • XML, Test/Unit, Distributed Ruby, XML-RPC, WEBrick

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