It didn't really crash, it found an assert statement. So if you look at the bottom of the function, you'll see that, in fact, I checked for that.

其实程序并没崩溃,它只是碰到一个断言语句然后停了下来,如果你看看函数的顶部，你会看到，实际上我断定计数器。

麻省理工公开课 - 计算机科学及编程导论课程节选

Notice in this program I have not checked whether or not the user actually provided input.

就拿这个程序说事吧，我们根本没有检查,用户到底有没有输入。

哈佛公开课 - 计算机科学课程节选

So I gave you some numbers I made up actually a long time ago, but since I've been using this game in class, somebody went out and checked.

我列举的数字都是我很久前编出来的,在我需要在课上引用数字的时候就有了,有人还为此做了调查

耶鲁公开课 - 博弈论课程节选

That's just the those-- let me use my pointer that's just these two lines here. I checked the value, and in one case, I'm changing the last to be mid minus 1, which is the case I'm in here and I just call again. All right?

来看看ppt，这里有两条线,我检查了值，在一种情况下,我把last指向了中点减一,就是这种情况,我们再来调用一下怎么样？

麻省理工公开课 - 计算机科学及编程导论课程节选