Dec 16, 2009 · When inheriting an abstract class, a concrete child class must define the abstract methods, whereas an abstract class can extend another abstract class and abstract methods from …

Nov 30, 2012 · You can still instantiate the abstract base class itself, and you won't find your mistake until you call the abstract method at runtime. But if you're dealing with a small set of simple classes, …

For abstract methods you have to explicibly state it, yes. For virtual methods it is more complicated. If you don't state the override keyword there, the original method will become hidden. If this is your …

Jul 4, 2011 · An abstract class contains at least one pure virtual function. So basically, an abstract class is an abstract class because it's designed to be a base class (some base classes by definition need …

In C#, when should you use interfaces and when should you use abstract classes? What can be the deciding factor?

Nov 29, 2016 · By adding the feature of abstract methods and types you prevent the unintended use of an incomplete type by someone who doesn't realize that it's incomplete. It provides a clear contract …

In the following code, I create a base abstract class Base. I want all the classes that inherit from Base to provide the name property, so I made this property an @abstractmethod. Then I created a

Apr 25, 2017 · Abstract classes can be used to store methods in an OOP-based "library"; since the class doesn't need to be instantiated, and would make little sense for it to be, keeping common static …

Apr 17, 2009 · Abstract Class: Only Abstract methods have to be implemented by the subclass. An Abstract class can have normal methods with implementations. An Abstract class can also have …

Dec 6, 2011 · What's the point of using "abstract methods"? An abstract class cannot be instantiated, but what about the abstract methods? Are they just here to say "you have to implement me", and if …