继承和多态 笔记

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#22 Created at ... [Delete] [Delete and Lock User]

cat 和 dog是animal 的子类，car是‘鸭子’

#23 Created at ... [Delete] [Delete and Lock User]

例子举得太好了，很有用，给力

#24 Created at ... [Delete] [Delete and Lock User]

谢谢

#25 Created at ... [Delete] [Delete and Lock User]

静态语言的话，我猜是car类不能使用需要传入animal类型参数的run_twice函数

#26 Created at ... [Delete] [Delete and Lock User]

如果是静态语言像C++的话，也就是没有像鸭子这个说法了，只有鸭子和不是鸭子。而且多态的话得先在基类中声明成虚函数virtual才行。

#27 Created at ... [Delete] [Delete and Lock User]

这个代码好棒，把继承和run讲得很清楚！

#28 Created at ... [Delete] [Delete and Lock User]

这个时真的清楚hhhh

#29 Created at ... [Delete] [Delete and Lock User]

原来最后的动态静态是这个意思懂了真好

#30 Created at ... [Delete] [Delete and Lock User]

走，一起去做鸭

#31 Created at ... [Delete] [Delete and Lock User]

比较测试了一下

也就是函数run_twice()兼容所有有run方法的对象（即使该函数定义在一个类里面），但是没有run_twice()方法的对象是无法调用该函数的