从一开始就要寻求使得代码简洁的方法。

Look for ways to simplify your code right from the outset.

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利用类的继承和多态特性，程序代码简洁，运行速度快。

By using characteristic of inheritance and encapsulation, code of programmer is more succinct, and speed of running is faster.

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对系统用户操作的样例，在系统验证中可以用到，代码简洁。

The system user of the sample, the system verification can be used, concise code.

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And this starts to make our code more readable, more elegant, just a little more compact.

这个使我们的代码变得更易读，更优雅，更简洁紧凑一点。

哈佛公开课 - 计算机科学课程节选