His first great discovery was made when he recognized a Cepheid variable star.
VOA: special.2009.04.29
These things run for variable amounts of time because they take input, a list of size of some amount.
而这一段的执行时间是可变的,因为它们需要输入一个包含一些元素的列表。
Because I was taught good style, I'm giving that variable a name that conjures up the idea of its role, which is thankful or not.
因为我们学习了好的格式风格,我将给那个变量起一个,能使我们联想到它的角色作用,它是满意的或不满意的。
And the answer is, you can use a variable anywhere you can use the value.
答案是,在需要用到值的,任何地方都可以使用变量。
What's variable about them is that they bind to a specific antigen.
它们可变的原因是,它们需要结合不同的抗原
So, and of course, you know, keeping entropy as a fixed variable for a system like that is extremely cumbersome.
所以,对这样的系统要求它们的熵保持恒定,和一个非常笨拙做法。
If you have an experiment and the outcome of the experiment is a number, then a random variable is the number that comes from the experiment.
如果你有一个试验,这个试验的结果是一个数,那么相对应的随机变量,指的就是这个试验结果所对应的那个数
ArgV You can think of this variable Arg V as literally an array a sequence of chunks of memory that literally are back to back to back in memory, and when you say bracket zero, by convention, you are referring to the variables stored here.
你可以想象这个变量,按顺序排列的一块块内存,依次地在内存中紧邻着的,当你指明,按照惯例,涉及,存储的变量在这里。
> David: At some point in time, I'm going to have to have declared the variable as a float before I can then hand it to printf as the insertion value for that format strength.
>,大卫:在一个特定的时间,我将需要,声明float类型这样的变量,那样我就可以把它打印出来,像是格式化优点的插入值。
Right? I've allocated a variable, it happens to be a pointer; it's still a variable, who know what's in it, right?
对不?我分配了一个变量,它碰巧是一个指针,它还是一个变量,谁知道它里面是什么?
s1 I have a variable called s1 and it's char * of type char * so here we go.
我有一个变量,它的类型是。
Anything where you're actually keeping track of something like a score that's having a variable that you increment -- plus, plus, or decrement, minus, minus, using the appropriate puzzle piece could certainly be compelling.
你需要保存像分数这样的事物时,你就需要一个变量,它可以自加,++,或者自减,要使用正确的拼图。
That there's a lurking variable which is just that people are more likely to be born in June.
人们的研究对象之中有一个隐藏变量,那就是大多数人都是在六月出生的。
So the system will not be described by a single state variable during the path.
因此系统将不能被,路径上的单一状态变量描述。
x Inside of that structure, create a variable name x, and a value associated with it.
创建了一个变量名为,然后给它赋值,请注意我也在这边做的操作。
But in general, the choice of variable name is a great way of commenting your code.
但是通常来说,变量名称的选择,是评论你的代码的,一个重要方式。
If I want to try and decide how to tackle a problem in an iterative matter, here the steps I'm going to go through. First thing I'm going to do, is I'm going to choose a variable that's going to count.
但是这就是我对它的观点,如果我试着去以迭代的方式,解决一个问题的话,下面是我应该采取的步骤,第一件要做的事情。
Right.? I'm going to set up a variable to say, none what's the answer I want to return, is it there or not. Initially it's got that funny value none.
看我要找的答案在不在数组里面,初始化为,然后建立一个索引。
Check to see if the variable iters left has a value greater than zero.
的值是不是大于,如果是的话,执行下面。
Let me write a function, in fact the literal thing I would do is to say, identify the things that change, give each of them a variable name because I want to refer to them, and then write a function that captures the rest of that computation just with those variable names inside.
让我来写个方法,实际上我的意思是,辨别出变化的东西,然后给它们逐个命名以区分,然后写一个用来计算,这些变量的,包括计算过程的方法。
And it's up to me to put that return value in a variable.
那个放在变量中的值是取决于我所赋的值。
Initialization. A very common bug is to initialize a variable. Go through a loop, and then forget to reinitialize it when it needs to be reinitialized again.
忘记初始化,忘记初始化变量是一个很常见的错误,运行完一个循环之后,当需要再次初始化时。
And when I create a binding, x I'm taking a variable name, in this case x, stored somewhere in a table, and I'm creating a link or a pointer from that name to that value.
当我创建一个绑定的时候,我有一个变量的名字,在这个例子中是,存在一个表中的某处,然后创建一个连接,或者指针从这个名字指向目标值。
I set up a variable here, called input OK.
我会在这里建立个变量。
You got to store it in a variable.
你把它存储在一个变量里。
It's going to be stored away in a variable.
结果值会被储存在变量里。
I declare a variable called n. I'm not giving it a value yet, so I had better be careful.
我申明一个变量n,我先不给它赋值,所以我最好小心点。
And I've got to worry about, is somebody else using ANS, answer, as a variable, in which case I've got to be really careful. Is somebody else using x as a variable? I've got to deal with a lot of those details.
而且我还要担心有没有别人,使用了ANS,answer作为变量,这样我就必须要非常小心,有没有别人用x当做变量呢?,我需要处理很多类似的细节。
In temp. So that means at the end of that first line of code just as before the value of 1 ends A up in a variable called temp because we said go to A and I look around, oh, there's A, what's there?
在temp中,在第一行代码的末尾,值1最终到了叫做temp的变量中,因为我们指明了定位到,并且四处查看,哦,这里是A,里面是什么?
Well, this block here on the left that I came counter counter=0 up with arbitrarily sets a variable called counter equal to 0 and then it forever says that counters value 1 and then it changes the counter by 1.
大家看一下左边的这一段代码,其中有一个随便定义的变量,它会一直显示counter的值,每显示一次,counter加。
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