From: Phrogz <gavin@...>
Date: 2006-09-04T00:10:35+09:00
Subject: Re: Happy Numbers (#93)

Sander Land wrote:
> class Array
>   def sum
>     inject(0){|a,b| a+b}
>   end
> end

For a little more speed, try instead:

class Array
  def sum
    inject{ |a,b| a+b }
  end
end