protected class members

Protected, like public and private, is used to declare the access rights of a member. The members declared by protected are called "protected members", or "protected members" for the short term. From the user's point of view of the class, the

In fact, the common class is the object template. To enhance js oo features, we can use a JSON object to describe this object template inspired by the mootoos framework. In this template, we can simulate Private Members, protected members, and

Access permission for C ++ protected members The discussion on the access permissions of protected in C ++ is already a very old topic, and it is so old that everyone is reluctant to discuss it. When I read c ++ primer again, the description of

In fact, the common class is the object template. To enhance js oo features, we can use a JSON object to describe this object template inspired by the mootoos framework. In this template, we can simulate Private Members, protected members, and

Access permission for C ++ protected membersThe discussion on the access permissions of protected in C ++ is already a very old topic, and it is so old that everyone is reluctant to discuss it.When I read C ++ Primer again, the description of the

C + + inheritance and derivation concepts, what is inheritance and derivationReusability in C + + is achieved through the mechanism of inheritance (inheritance). Therefore, inheritance is an important part of C + +. The class is described earlier,

protected and private in pyThonIn Python_var; The variable name is defined by an underscore, which is a protected member protected that only the class and its subclasses can access. This variable cannot be imported through the From XXX import

Since the derived class contains the members of the base class and the derived classes themselves, there is a problem with the relationship and access properties of the two-part members. When you build a derived class, you do not simply use the

1.mysql Package ClassDefine parameters for initializing database connections in a constructor "because the parameter passed in when instantiating an object is the only parameter entry for that object"But instead of redundant definitions in the

We know that in C #, inheritance allows a base class with common data and methods to be widely used to reduce the amount of code, so that derived classes have all members of the base class (except constructors, etc.), and we can naturally use the