On Thursday, we'll look at why that allows you to do lots of things more conveniently than you can do without mutation.
周四我们会探讨下,为什么这种可变性会让你,在进行很多操作的时候方便了许多。
so you get a good idea of, like, what you knew how to do and what you couldn't do. So.
你就能明白你现在会做什么,以及不能做什么。
Do you have a visceral sense, "oh, don't do that"? If you do, you were probably taught, like me: "never, never damage a book.
你们想发自肺腑地说一句:“哦不,不要这样“吗,如果是,那你们和我从小被教育的一样:绝对不要损坏书本。
Try to imagine-- can you do that or can you not do that?-- try to imagine a round square.
试着去想象,你可不可以这样,试着去想象一个圆的方形
A couple of really interesting consequences of that, by the way, one of them is, it says, anything you can do in one programming language you can do in another programming language.
一些真正有趣的后果是,顺便说一句,其中之一是,它说你在一种编程语言中,能做的事情,在另一种语言中也能做。
We all have our version of trying to wrestle with this: if God knows what you're going to do tomorrow, to what extent does it make sense to say that what you do tomorrow you do freely?
我们都有自己试图解决这个问题的方式:,如果上帝压根儿就知道我们明天要做什么,那么,说着明天会自由的从事自己想做的事情,究竟又有什么意义呢?
So you can't do this, because you're going to lose track of the numbers if you do that.
你不能这样做,因为你那样做,你将会和,这些数字失去联系。
Thank you. I just feel like in the situation that desperate, you have to do what you have to do to survive.
谢谢,我只是认为,在那样的绝境下,为了生存,你不得不那样做。
If my advice is lost in the wind and you do not do as I wish, I do not recognize you as my son."
如果你辜负了我对你的期望,胆敢把我的话当耳边风,我就绝不认你这个儿子"
But I went away from political science because I realized that there are a lot of parallels between what you do in politics and what you do in government and writing policy and laws and what you do in programming.
但我放弃了政治学,因为我意识到,在政界和在政府里,编制政策和法律,和编程虽然非常相似。
You do the reading before class, you come to class, and you do the homework.
在上课前预习,在上课时认真听讲,课后好好做作业
The question is how do you get those readings and how do you access them?
问题是如何获取这些资料,并打开它们
And on Friday in class, at the beginning of class, I'll go over just in all the detail you could possibly imagine everything you need where it is, what you do, what kind of calculators you can bring, which by the way are any calculator.
在周五那节课开始的时候,我会详细地告诉大家,你们所能想到的,在哪考,你要做什么,什么样的计算器可以带,顺便一提的是,什么样的计算器都可以。
They said--one of the lessons they were told is, never cut a dividend unless you do it as a-- you could do a one time only dividend.
他们说,他们学到了一点,永远不要停止分红,除非你,除非你只是一次性分红
Speed, right. So another decision you face is do you just try and kick this ball as hard as you can or do you try and place it?
球速是正解,你还需要考虑,当你主罚点球时你是大力抽射,还是小力轻擦
This is real, unlike the Joule coefficient which is very small so that most gases have tiny Joule coefficients. So if you do a Joule experiment, you hardly measure a temperature change. With real gases, here you do actually measure it. You can feel it with your finger on your bicycle tire.
系数那样小以至于,大多数气体的焦耳系数,都很小,所以如果你做焦耳实验,很难测量出温度的变化,对于真实气体,你可以测量它,你能通过手指按在,自行车轮胎上来感觉到它。
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