在Scala中定期运行功能 [英] Run a function periodically in Scala

问题描述

我想每n秒调用一次任意函数.基本上，我想要与Javascript中的SetInterval相同的东西.如何在Scala中实现这一目标?

I want to call an arbitrary function every n seconds. Basically I want something identical to SetInterval from Javascript. How can I achieve this in Scala?

推荐答案

您可以使用java.util.concurrent中的标准内容:

You could use standard stuff from java.util.concurrent:

import java.util.concurrent._

val ex = new ScheduledThreadPoolExecutor(1)
val task = new Runnable { 
  def run() = println("Beep!") 
}
val f = ex.scheduleAtFixedRate(task, 1, 1, TimeUnit.SECONDS)
f.cancel(false)

或java.util.Timer:

val t = new java.util.Timer()
val task = new java.util.TimerTask {
  def run() = println("Beep!") 
}
t.schedule(task, 1000L, 1000L)
task.cancel()

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