Robots, From https://github.com/JumpstartLab/warmup-exercises/tree/master/06-robot-name

robot.rb

class Robot
  attr_reader :name, :instruction_count, :created_at, :reset_at
  def make_name(name_length=5)
    return Array.new(name_length){rand(36).to_s(36)}.join.upcase
  end
  def incf_instruction_count
    @instruction_count += 1
  end
  def set_name()
    @name = make_name
    incf_instruction_count()
  end
  def name()
    incf_instruction_count()
    @name
  end
  def initialize()
    @instruction_count = 0
    @created_at = Time.now
    @reset_at = Time.now
    set_name()
  end
  def reset
    set_name()
    @reset_at = Time.now
  end
  def timers
    return [@reset_at, @created_at]
  end
  def elapse_timers
    return [Time.now - @reset_at, Time.now - @created_at]
  end
  def report_timers
    reset_time, create_time = elapse_timers
    puts "#{reset_time} seconds since reset; #{create_time} seconds since created."
  end
end