Top "Abstract-class" questions

Abstract classes are classes which cannot be instantiated.

How define constructor implementation for an Abstract Class in Python?

I am trying to declare an abstract class A with a constructor with a default behavior: all subclasses must initialize …

python python-2.7 oop abstract-class
"undefined reference" to Virtual Base class destructor

Possible Duplicate: What is an undefined reference/unresolved external symbol error and how do I fix it? I have some …

c++ abstract-class undefined-reference
call to pure virtual function from base class constructor

I have a base class MyBase that contains a pure virtual function: void PrintStartMessage() = 0 I want each derived class to …

c++ constructor abstract-class object-lifetime pure-virtual
C#: Creating an instance of an abstract class without defining new class

I know it can be done in Java, as I have used this technique quite extensively in the past. An …

c# abstract-class abstract anonymous-class
How to force async child overrides in C# 5.0

I'm working on a system in which multiple client objects are expected to implement a particular function via an interface, …

c# asynchronous abstract-class async-await c#-5.0
Extending vs. implementing a pure abstract class in TypeScript

Suppose I have a pure abstract class (that is, an abstract class without any implementation): abstract class A { abstract m(): …

typescript abstract-class extends implements
Java Abstract Class Implementing an Interface with Generics

I am trying to define an abstract class implementing Comparable. When I define the class with following definition: public abstract …

java generics abstract-class
Abstract classes vs Static classes in C#

Possible Duplicate: What's the difference between an abstract class and a static one? Hello I Would like to know what …

c# abstract-class static-classes
`staticmethod` and `abc.abstractmethod`: Will it blend?

In my Python app I want to make a method that is both a staticmethod and an abc.abstractmethod. How …

python abstract-class static-methods
How can I assure a class to have a static property by using interface or abstract?

I have one abstract class -let's say myBase. And I want all the classes derived from myBase to have one …

c# interface static abstract-class overriding