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【进站必读】宝可饭堂社区全局规定v1.10

关于坚决维护同人创作社群秩序与共识的公告

信息: <blockquote data-quote="TAAAAAAA" data-source="post: 2359" data-attributes="member: 2783">Inheriting classes 类的继承By default, a new class inherits Object (which in turn inherits Kernel), which means the inheritance tree for any new class is:默认情况下，新的类会继承自Object类，请看下面的YourNewClass（你的新类类）的例子：To change which class a new class inherits from, you write < ClassName after the new class name when you define a class:如果你想要改变继承关系的话，你可以在新创建一个类的时候，就直接为其指定它的父类，请看下面的这个例子：The Two class now inherits from the One class, so the inheritance trees are as follows:请看下面的父子类关系图：andSo if we defined a method in class One, we could call it in class Two:所以，我们可以对Two的实例调用One的实例方法，请看下面的例子：To overwrite this method, you just add the method to class Two and make it do something else.同时，你也可以在Two中写一个叫做say_hello的方法，这样当你对Two的实例运行say_hello的时候，就会调用Two本身的这个say_hello实例方法。To open a class with inheritance back up later, you can either include the inheritance part of leave it out - that doesn’t matter.你只能在Two被创建的最开始为其指定父类，在以后你打开或者关闭Two时，并不需要特别写出来Two继承自One，请看下面的例子：However, if a class is going to inherit from a different class, whenever that class is defined (the first time it’s opened), it has to inherit from that class. You can’t not-inherit and then inherit later anyway.</blockquote>