From: Ruhe <nocturneer@...>
Date: 2008-02-16T23:49:56+09:00
Subject: Iterate through array twice

I have array of horizontal segments and I need to find which of them
may be sides of a box, so I implemented this method:

def find_square_sides(horiz_segments)
  squares = Array.new
  horiz_segments.each_with_index do |side, i|
    horiz_segments[(i+1)..(horiz_segments.size - 1)].each do |
condidate|
      if(## here goes long-long check ##)
        squares << Square.new(side, condidate)
      end
    end
  end
  squares
end


Knowing the beauty of Ruby, I hope that there is a better solution. I
guess that double iterating isn't the best.