{//okpublicBaseMethod();//okprotectedBaseMethod();//compile error: 'privateBaseMethod' is a private member of 'Base'//privateBaseMethod();} };//private inheritance, Base's public and protected members will become private in PrivateDerivedclassPrivateDerived:privateBase{public:voidaccessBase() ...
私有继承也可以看作是某种组合: C++ faq-lite 给出了下面的例子来说明这个语句 class Engine { public: Engine(int numCylinders); void start(); // Starts this Engine }; class Car { public: Car() : e_(8) { } // Initializes this Car with 8 cylinders void start() { e_.start(); } /...
private inheritance makes the public and protected members of the base class private in the derived class. Note: private members of the base class are inaccessible to the derived class. class Base { public: int x; protected: int y; private: int z; }; class PublicDerived: public Base { ...
classBASE { private: int val;public:voidfoo(BASE *p) {intw = p->val; } }; 同学参加一场笔试,抛出个问题,丫凡和我讨论了下,丫凡在stackoverflow上找到了答案…… 如下内容引述自:http://stackoverflow.com/questions/6986798/subtle-c-inheritance-error-with-protected-fields ...
Protected members play an important role in inheritance. They are accessible in the same class where they are declared and in other classes derived from the containing class. This means if you have a base class with a protected member, this member can be accessed by any class that inherits ...
Class inheritance and partial classes in C# Class to return a list or single item Classes not recognized in their unit test code clean up code that simply removes the last comma of a comma separated string ? Clear Date time Picker Value Clear Selected Value in ComboBox Clearing Excel Sheet ...
编辑:--这是我当前的问题解决方案:我在模型类中重写了attributes_protected_by_default私有方法。class Automobile < ActiveRecord::Base def attributes_protected_by_default super - [self.class.inheritance_column 浏览1提问于2010-03-26得票数2 回答已采纳 ...
Visible to the class only (private). Visible to the world (public). Visible to the package and all subclasses (protected).Access Control and InheritanceThe following rules for inherited methods are enforced −Methods declared public in a superclass also must be public in all subclasses. Methods...
in C are mimicked by structures, PLOOC implements classes using a masked structure. As expected, only the class source code can access the private members, and only the class source code of a derived class can access the protected members of the base class. Public members, however, are ...
In class Car, a private method startEngine() cannot be called from outside the class. 13 Protected in C++ Protected access allows inheritance hierarchies to share functionalities. In class Animal, a protected attribute age can be directly used by its subclass Dog. 15 Private in C++ Private is...