ruby - 如何让秒表程序运行？

Question

我从网站上借用了一些代码，但我不知道如何让它显示。

class Stopwatch
  def start
    @accumulated = 0 unless @accumulated
    @elapsed = 0
    @start = Time.now
    @mybutton.configure('text' => 'Stop')
    @mybutton.command { stop }
    @timer.start
  end

  def stop
    @mybutton.configure('text' => 'Start')
    @mybutton.command { start }
    @timer.stop
    @accumulated += @elapsed
  end

  def reset
    stop
    @accumulated, @elapsed = 0, 0
    @mylabel.configure('text' => '00:00:00.00.000')
  end

  def tick
    @elapsed = Time.now - @start
    time = @accumulated + @elapsed
    h = sprintf('%02i', (time.to_i / 3600))
    m = sprintf('%02i', ((time.to_i % 3600) / 60))
    s = sprintf('%02i', (time.to_i % 60))
    mt = sprintf('%02i', ((time - time.to_i)*100).to_i)
    ms = sprintf('%04i', ((time - time.to_i)*10000).to_i)
    ms[0..0]=''
    newtime = "#{h}:#{m}:#{s}.#{mt}.#{ms}"
    @mylabel.configure('text' => newtime)
  end
end

我将如何让它运行起来？谢谢

Answer 1

根据 rkneufeld 发布的附加代码，此类需要一个特定于 Tk 的计时器。要在控制台上执行此操作，您只需创建一个循环来一遍又一遍地调用 tick。当然，您必须删除所有与 GUI 相关的代码:

class Stopwatch
  def start
    @accumulated = 0 unless @accumulated
    @elapsed = 0
    @start = Time.now
#    @mybutton.configure('text' => 'Stop')
#    @mybutton.command { stop }
#    @timer.start
  end

  def stop
#    @mybutton.configure('text' => 'Start')
#    @mybutton.command { start }
#    @timer.stop
    @accumulated += @elapsed
  end

  def reset
    stop
    @accumulated, @elapsed = 0, 0
#    @mylabel.configure('text' => '00:00:00.00.000')
  end

  def tick
    @elapsed = Time.now - @start
    time = @accumulated + @elapsed
    h = sprintf('%02i', (time.to_i / 3600))
    m = sprintf('%02i', ((time.to_i % 3600) / 60))
    s = sprintf('%02i', (time.to_i % 60))
    mt = sprintf('%02i', ((time - time.to_i)*100).to_i)
    ms = sprintf('%04i', ((time - time.to_i)*10000).to_i)
    ms[0..0]=''
    newtime = "#{h}:#{m}:#{s}.#{mt}.#{ms}"
#    @mylabel.configure('text' => newtime)
  end
end

watch = Stopwatch.new
watch.start
1000000.times do
  puts watch.tick
end

你最终会得到这样的输出:

00:00:00.00.000
00:00:00.00.000
00:00:00.00.000
...
00:00:00.00.000
00:00:00.00.000
00:00:00.01.160
00:00:00.01.160
...

不是特别有用，但确实有用。现在，如果您想在 Shoes 中做类似的事情，请尝试 this tutorial这非常相似。