A recent online survey found that half of them now belong to social networks like Facebook and LinkedIn.
VOA: special.2009.09.14
Right, so the fundamental idea then, is, I want to glue together information, I want to take pieces of data that naturally belong together, glue them together, and attach some methods to it.
放在一起的数据拿出来,把它们放到一起,然后把一些方法附加上去,这些,你知道的,是很长的一个定义,让我们来看个例子吧。
And the problem is, that we want to build this abstract data type, but we'd like to basically know what kind of object is it, and what functions actually belong to it, how do we use them?
然后我对它们运行了这个方法,就是这一小段代码这个方法,这有意义么?,当然没有了,对不对?,因为你知道,当你把两个极坐标,表示的点进行相加运算的时候?
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。
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