Number one, the basic structure is that you have a pointer and it points over to a pointee, but the pointer and pointee are separate and the common error is to set up a pointer but to forget to give it a pointee.
第一,基本结构是,你有一个,指向数据的指针,但是那个指针和数据,是分开的,通常错误是声明了一个指针,但是没有指向一个数据。
Well, it turns out on most computers an address of the location and memory, aka a pointer, is itself 32 bits.
好的,它是一个计算机内存地址,或者说一个指针,占32位。
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。
Also, what's the energy per photon of this red laser pointer, and then it's also worth trying a calculation dealing with intensity. So let's also try calculating the numbers of photons that would be emitted by this laser pointer, if, for example, we were to use it for 60 seconds and this were a one milliwatt laser.
同样,红色激光笔的,每个光子能量是多少,这也值得用处理强度的方法计算一下,让我们也计算一下,有多少光子会从这个激光笔射出,举个例子,如果我们使用它持续60秒,这里会有一毫瓦的激光。
We have a pointer to the location in memory that contains the actual value, which itself might be a bunch of pointers, and we have a pointer to the actual-- sorry, a pointer the value and we have a pointer to the next element in the list. All right?
包含实际值的地址,可能实际值,也是一系列指针,这里还有指向实际,抱歉,指向下一个元素的指针,我们来整理下?
It says, if I want to print out something I built in Cartesian form up here, says, again, I'm going to pass it in a pointer to the instance, that self thing, and then I'm going to return a string that I combine together with an open self and close paren, a comma in the middle, and getting the x-value and the y-value and converting them into strings before I put the whole thing together.
这不仅仅是个列表,它是怎么来做的?,流程是:如果我想要返回,一些已经在笛卡尔模式下建好的值,好,再说一遍,我首先要传入一个,指向实例的指针,也就是,然后我会返回一个,由开括号,闭括号,中间的一个逗号,以及提前转换为字符串格式的。
I'm going to call it x and how do I make a pointer to an int?
我把它叫做x,我怎样声明一个int型指针?
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