Are protected members/fields really that bad? No. They are way, way worse. As soon as a member is more accessible than private , you are making guarantees to other classes about how that member will behave.
Is it bad to use protected?
Most of the time, it is dangerous to use protected because you break somewhat the encapsulation of your class, which could well be broken down by a poorly designed derived class.
Is protected bad C++?
It is recommended to use private as a default (just like C++ class ses do) to reduce coupling. Protected member variables are most always a bad idea, protected member functions can be used for e.g. the Template Method pattern.
Should getters and setters be public or protected?
If you’re doing #1, then you should use public getters and setters. If you’re doing #2, then you should use protected fields. If you’re doing both, use both.
Why is private not protected?
If that field is private in the base class then the subclass cannot access it, cannot extend the functionality. If the field is protected it can do so. Subclasses have a special relationship to the base class that other classes elsewhere in the class hierarchy don’t have: they inherit the base class members.
Why protected is bad?
Putting protected on a member variable breaks encapsulation because now a derived class has access to the implementation details of the base class. It’s the same problem that occurs when you make a variable public on an ordinary class.
Why is C++ protected?
The protected keyword specifies access to class members in the member-list up to the next access specifier ( public or private ) or the end of the class definition. Class members declared as protected can be used only by the following: … Direct privately derived classes that also have private access to protected members.
What is the difference between private and protected in C++?
The class members declared as private can be accessed only by the functions inside the class. … The class member declared as Protected are inaccessible outside the class but they can be accessed by any subclass(derived class) of that class.
What is the difference between public/private and protected in C++?
public – members are accessible from outside the class. private – members cannot be accessed (or viewed) from outside the class. protected – members cannot be accessed from outside the class, however, they can be accessed in inherited classes.
Can we access protected and private members of a class?
Protected members in a class are similar to private members as they cannot be accessed from outside the class. But they can be accessed by derived classes or child classes while private members cannot.
Are getters and setters bad?
Getter and setter methods (also known as accessors) are dangerous for the same reason that public fields are dangerous: They provide external access to implementation details. … You also have to change the accessor’s return type. You use this return value in numerous places, so you must also change all of that code.
Are getters private?
Actually, it is not. The reason for declaring getters and setters is to hide the fields. This is done to avoid unwanted coupling; i.e. clients of an API depending on the implementation details of the API. (That coupling can be problematic for a number of reasons.)
Can set and get methods private?
Yes, getters and setters can be made private.