回忆一下，我们编写了3块代码：任务代码、加载器和聚合器。

As you'll recall, there were 3 pieces of code to write: task code, a loader, and an aggregator.

youdao

这样做，你必须指定点的任务代码中的线程可以切换到另一个任务。

To do that, you have to specify the points in task code where the thread is allowed to cut over to another task.

youdao

接下来我甚至会进一步运行测试用例，尽管我知道它们将失败，因为我没有为该类编写任务代码。

Then I would even take it a step further and run the test cases, even though I know they will fail because I haven't actually written any of the code for it.

youdao

So my challenge to you, and I know Professor Guttag can do this, my challenge to you is, a year from now, come back and look at code you wrote here.

因此我这里有个具有挑战性的任务，我知道Guttag也可能会说这个任务，我的这个任务就是，一年以后，回头来看,你之前写过的代码。

麻省理工公开课 - 计算机科学及编程导论课程节选