gistfile1.rb

class Pitcher < ActiveRecord::Base
  attr_accessible :age, :name, :whip
  alias :whip_1 :whip

    (2..7).each do |num|
      define_method("whip_#{num}") do
        if self.age < 28
          eval("self.whip_#{num-1}") * 0.95
        else
          eval("self.whip_#{num-1}") * 1.05
        end
      end
    end

end