A patterned series of these tiny charged berries on the disk represents a single bit of data in the binary number system used by computers.
这些在磁盘上的有序的小粒子,代表这个当代计算机中,二进制中单独的一位。
All these data were used for Google Analytics.
所有这些数据都用于谷歌分析。
Well, there are many factors, but one important factor is, the rise of the Internet has competed with -people used to buy The Wall Street Journal to get data like this.
其实有很多因素,但是最主要一点是,来自网络的竞争,人们过去买《华尔街日报》来获取这些数据
And it's a topic I want to pick up on today, we're going to do for the next few lectures, and it's a topic I want to spend some time on because this idea of capturing data and methods, the term we're going to use for it, but data and functions that belong to that data, things that can be used to manipulate them, is a really powerful one.
我们会在今天讲这个话题,在后面几节课还会讲这个,这是个我愿意花点时间,在上面的话题因为这是个,捕获数据和方法的思想,我们用这个术语来形容它,数据中包括了数据和函数等,能用来操作它们的东西,真的是很强大的工具,我们真正要讲的东西是,我们要学会如何把信息。
And I don't quite remember from reading or from class how big these things are, well, it turns out -- and this is sometimes useful, later on more likely than now -- but C has a size of operator that takes an argument in parenthesis and it will tell you how much space is used to store that particular data type.
我不太记得类中的这些类型,是多大的,嗯,结果是--这个在以后比现在,可能是更有用的--不过C语言中有个sizeof的操作符,其中括号里有一个参数,它会告诉我们,要存储一个类型的数据,需要占用多大空间。
Sometimes the functions -- sometimes a function can be used on multiple data types, plus, for example, we saw could add strings, or could add ints, but each one of those data types has associated with it a set of functions that are geared to handling them.
比如说,我们可以对string类型,进行add操作,也可以对int类型进行这个操作,但是这些数据类型中的每一种,都与适合于操作它们的,方法集相关联,我们想对我们创建的数据,类型做同样的事情。
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