Array Flatten

gistfile1.txt

# Extends Array class with a new flatten method
# Type checking is not done since this is extending Array
# Uses simple recursion

class Array

  def re_flatten
    flat = []
    self.each do |a|
      if a.is_a?(Array)
        flat += a.re_flatten
      else
        flat << a
      end
    end
    flat
 end
 
end