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Again,the address is americanhistory-dot-s-i-dot-e-d-u.
VOA: special.2010.01.11
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Is something in the set, or is table member something in the table? Well, what I would have written is something like table dot member.
在集合或者表中有没有存在过呢？,好吧，我会写的是,然后也可能是元素或者表格。
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And in fact if I go off and run this, OK, what I was printing here was s 1 dot length, and that's -- What is it doing?
他们就是一些有结构的实例，实际上如果我去运行下这个，好，我这里输入的？
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I'm then printing bracket one, bracket two, bracket three, bracket dot, dot, dot up until the total number of arguments, 1 whatever that may be, and it's going to be at least one because the program always has a name.
然后我打印，括号等等等，知道打印完所有的参数，不管那个最大值可能是什么，它将至少为,因为程序总是有一个名字。
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So in hydrogen atom a, I'll depict that here where the nucleus is this dot, and then the circle is what I'm depicting as the wave function.
在氢原子A里，我在这里把原子核画成一个点，这圆就是波函数。
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One thinks, in a way, of Welles' line in The Third Man : when he looks down from above and says, "If I gave you 20,000 pounds for every dot that stopped moving, "? would you really tell me to keep my money?"
从某一层面看来，可以假想，Welles，在《黑狱亡魂》中的台词,当他从高处往下看并说，“如果你干掉一个在下面走动的人,我就给你，20，000，英镑，你拒绝得了吗“
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I'm going to see if I have enough money to do this in class When we played this game in the old days, during the dot com boom with the MBA students, you had to put fifty dollars on the table to get them interested.
我看看我有没有足够的现金,在之前和MBA学生做这个游戏的时候,那时候正赶上互联网大繁荣,你得拿出来50美元他们才有兴趣
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All right, c p 1 dot y, x I've said assign that to the value 2, 2,0. So now c p 1 has inside of it an x and y value.
一个特定的版本，我现在命名了一个内置变量，并给它赋值了,我刚刚做的也就是给它。
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So let's think about lists. So if l is a list, l sort I can call something like s dot sort, l dot sort.
所以让我们想想链表，所以如果l是一个，链表我可以调用像是s，sort的函数。
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Now I'm typing dot slash as a convention.
现在我输入。
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So when I type, I'm sorry, I shouldn't say type, c point although I would have typed it, p dot x, here's what basically happens.
处于特定点的实例的这个概念，我知道它来自于这个类，这个类，when，I，write，因此当我输入，抱歉，我不该说输入的，当我写，虽然我需要输入它，p，x的时候。
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If I want to get values back out, p I could in fact simply send to that instance a message, in this case I could say p dot x.
我就是，我刚刚在这里输入的，我得到了一个c，point的实例,如果我想把值取出来，实际上我可以。
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So I'm gonna go ahead and save this file, hello c it's hello.c, dot C hints at the fact that this program I just whipped up is written in a language called C.
所以我打算继续，保存，并命名为，“，c“表明这个程序,是使用C语言写的。
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So I've got one more piece of bad code on this point and this is buggy five dot c. So as a comment on top bug of this file challenges, what is, in fact, the bug.
所以我在这里得到了一块很烂的代码,这个是buggy5，c，所以作为这个文件顶端的注释,那实际上是那个。
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I'll draw something from the distribution, so this is interesting, distribution I'm now calling self dot distribution, and remember this will be different for each stock.
我会从分布中读取一个值，这就是有趣的部分，我现在会调用self。,请记住每只股票都是不一样的。
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Because what I want to do is, 01 say if self dot price is less than 0.01, 0 I'm going to set it to 0, just keep it there.
因为我想要做的是，比方说如果self。price小于0。,我就把它的值设为，然后放在那。
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stdio c So somewhere there's standard IO dot C, stdio h somewhere they're standard IO dot H, but, for me, right now, the only file I need to know about is the dot H, -- because what Sharp include really does -- it's what's called a preprocessor directive.
所以某个地方有一个，现在对于我来说它们是，我只要知道那个，h文件，因为Sharp包含的-,叫做预处理指令。
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Because I know this program was saved by default into my current folder, my current directory, so dot slash means run the program called a.out that's right here in my current directory not in, like, a out my applications folder or somewhere else.
程序默认保存在,当前目录下的文件夹，/意味着运行这个名为“a，out“的文件,是我当前目录下的文件，而不是应用程序文件夹或其他别的地方的。
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I then print X's now such and such, initializing dot, dot, dot.
然后我打印X的值，如此这般，初始化点，点，点。
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I have connected to the course's central server from my own laptop and via dot slash chart am I about to run a little program that depicts as best we can with what with generally call ASCII art -- -- it's really all you can do in a terminal window like this -- our numbers from the past few years.
我已经通过我的电脑连接到了课程的中心服务器,在我的笔记本电脑上，通过键入“，/chart“,我将要运行一个被描写成,“ASCII码艺术“的小程序-,在一个这样的终端窗口中你们都可以做到-,过去几年中我们的人数。
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self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work.
我创建了，然后给它赋值，然后，噢太酷了，通过做一点额外的工作,就可以得到点的半径和角度了，好，实际上如果。
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uniform So here, I'm going to look at the thing random dot uniform, for example, between minus volatility and plus volatility.
所以在这里，我会看到random。,比方说，在-浮动性值+浮动值之间。
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So the first thing it does, price=0 is it says, if self dot price is 0, I'm just going to return.
所以它做的第一件事就是，如果self。,我就返回。
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I next say I am capitalizing the copy dot, dot, dot.
接下来我把那个拷贝大写化。
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In which I said c p 1 dot x equals 1.0.
请注意我上面是怎么做的,创建了cp1和cp2后。
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Well it's a stupid looking program, but because I had more new line characters, and because I was using percent C, for individual characters, one per line, now I'm seeing dot slash ARG V2, well, now if I go ahead and rerun this with foo, I get this effect as well.
这是一个看起来很笨的程序，但是因为我有更多的新行代码，因为我使用的是%c，为单个字符使用的，每一行一个，现在我看到的是，/argv2，好的，现在如果我继续用foo返回它，我产生了这样的效果。
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Why did I say if self dot price equals return?
为什么我会说如果self。price等于0就返回呢？
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Why is this much nice? Well, that's a handy piece of code. Because imagine I've got that now, and I can now store that away in some file name, input dot p y, and import into every one of my procedure functions, pardon me, my files of procedures, because it's a standard way of now giving me the input.
为什么这样很好呢？,这是一段很好用的代码,因为想象下如果我有了这段代码,我能把它用某个文件名保存起来,后缀是。py，导入到所有的处理函数中,抱歉，我的处理文件,因为这是一个标准的输入方法。
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