They only need to have values if you care GetInt about getting something back from them, get int, swap you care about its value; but swap, I don't want to hear it again.

它们只需要拥有值，如果你关心,它们的返回值，你关心它的返回值，但是，我不想再得到它的返回。

哈佛公开课 - 计算机科学课程节选

I don't care how you do it on exams or on problem sets, but you do need to be aware that the 3 d once filled is lower in energy than the 4 s, and the reason you need to be aware of that is if you're asked for the electron configuration now of the titanium ion.

我不关心你们在考试或者,问题集中如何做它，但是你们的确需要知道3d一旦被填充,它的能量是小于4s的，你们需要知道这个的原因,是如果你现在被要求,写出钛离子的电子构型。

麻省理工公开课 - 化学原理课程节选