This question already has answers here: Closed 11 years ago. 开发者_Go百科 Possible Duplicate: Interface vs Abstract Class (general OO)
What\'s the purpose to define a Django model with abstr开发者_如何学JAVAact = True ?abstract=True means this model is an abstract model class. It does not have a database table and is merely a shared
I\'m only interested in handling GET or POST requests, so I designed this abstract class to determine which request has been made and to subsequently call the appropriate function. I would really appr
I know three approaches: Create fake subclass (looks ugly) Test one of real subclasses Use getMockForAbs开发者_运维百科tractClass() (contradicts with mocks\' mission; also can\'t stub not-abstract m
I am a java developer with good u开发者_JAVA技巧nderstanding of Object orientation concepts(or maybe, I think like that). And right now I am learning design patterns (From Head first design patterns).
I\'m sure its something simple on my part, but I can\'t figure out why my compiler thinks one of my classes is abstract. Here\'s the situation:
On MSDN I have found that it is a error to use \"virtual\" modifier in an abstract meth开发者_如何学编程od declaration.
I am trying to figure out the best way to handle a derived class that also has a property in it that I want to also be derived from a different class. Let me show you the simplified classes:
I have an abstract class that has a generic method and I want to override the generic method by substituting specific types for the generic parameter. So in pseudo-code I have the following:
Context: In a game, when each level is completed, a Rating is stored based on player performance: Poor, Good, Excellent.
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