How to return an object of a class which is derived from an abstract class?
3177
What is object slicing?
94251
Is it possible to assign a base class object to a derived class reference with an explicit typecast?
66645
Abstract methods in Java
94610
Avoiding copy of objects with the "return" statement
80933
Overloads of inherited member functions
120220
Inheritance of Object Class in Java
16624
Why do Python classes inherit object?
54362
Overriding and return type compatibility
21739
When to use abstract classes?
46787
A way of casting a base type to a derived type
153216
How to return different classes from one function?
103294
How to implement an abstract class in ruby?
152816
Abstract base classes that implement an interface
150754
Python - Testing an abstract base class
129614
Can we instantiate an abstract class directly?
55936
What's the best way of accessing field in the enclosing class from the nested class?
69594
What is the difference between an interface and abstract class?