#pragmaticstudio attr_logger

class AttrObject
  
  def self.attr_logger(*args)
    args.each { |attribute| define_method(attribute) {
      value = instance_variable_get("@#{attribute}")
      STDERR.puts "#{Time.now} - #{value}"
    }}
  end
  
end

class Person < AttrObject
  attr_logger :first_name
  attr_logger :last_name

  def initialize
    @first_name = "John"
    @last_name = "Doe"
  end
end

john = Person.new
john.first_name
john.last_name