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This combining of data and functions on that data is a very essence of object-oriented programming That's really what defines it.
数据与函数的结合,是面向对象编程的核心,这也就是它的定义。
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Now these ideas of classes, object-oriented programming, data abstraction, are about 40 years old, they're not new ideas.
面向对象编程的概念，数据抽象的概念，都是40年前就有的老东西了。
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So what is this all about? What is an object in object-oriented programming?
所以它到底是什么呢？,面向对象编程中的对象到底是什么呢？
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PROFESSOR: Last time, Professor Guttag introduced the idea of objects and classes and this wonderful phrase called object-oriented programming.
教授：上节课，Guttag教授,介绍了对象和类的概念以及,面向对象编程这个美妙的短语,这是我今天想继续讲的一个话题。
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And today nobody advocates a programming language that does not support it in some sort of way.
今天没有人会推荐一种,不支持面向对象编程的语言。
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There's this weird extra variable in there called self.
好，这是关于面向对象编程,我们需要谈论一点的东西。
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As we talk about this, as people talk about this, in the context of our object-oriented programming, they typically will talk about it in terms of message pass, a message passing metaphor.
当我们讨论这个的时候，当人们讨论这个的时候,在面向对象编程的背景下它们往往会,被称为消息传递，也就是传递隐喻的消息。
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