假设需要一个类别库,改类别库共包含以下5个类:GrandFather(祖父类).Father(父类).Son(儿子类).Daughter(女儿类).GrandSon(孙子类) 各个类之间的继承关系为: 相应的代码为: class GrandFather { }; class Father:public GrandFather { }; class Son:public Father { }; class Daughter:public Father { }; class GrandSon:pub…
这两个方法常常会困惑我们,它们有什么区别呢? 定义 首先,我们来看看它们的定义. isKindOfClass: 官方解释:Returns a Boolean value that indicates whether the receiver is an instance of given class or an instance of any class that inherits from that class. isMemberOfClass: 官方解释:Returns a Boolean…