Rails initializer for quick monkeypatches and additions to basic ruby classes

poro_extension.rb

class Numeric
  # 200.01.safe_percent(50) #=> 25.%
  def safe_percent(part)
    if self > 0
      if part >= 0
        return 100*part.to_f/self.to_f
      else
        raise "Sorry, no negative numbers please"
      end
    elsif self == 0
      if part == 0
        return 0
      else
        raise "You are trying to do #{part}/#{self}*100%, WTF?"
      end
    else
      raise "Sorry, no negative numbers please"
    end
  end

end