abstract-class

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Django automatically inheriting "abstract = true" from an abstract meta class

I am using the following code. class CommonFunctions(object): def get_absolute_url(self): return \"/{0}/list/\".format(self.__class__.__name__).lower()[详细]

2023-03-16 07:38 分类：问答
Why doesn't an interface work but an abstract class does with a generic class constraint?

The code below shows a generic class with a type constraint (Pub<T>). The class has an event that it can raise allowing us to pass a message to subscribers. The constraint is that the message mu[详细]

2023-03-16 07:11 分类：问答
Do understand some code using abstract class in php

I understand the concept of abstract class, but I saw a code in a book that I do not understand. I will short the code and would like you help me to understand, I know what it does I just don\'t why[详细]

2023-03-15 21:10 分类：问答
How do you declare an abstract method so that the parameter type (class) is always the Children class?

EDIT : see bottom First off I searched for an answer before asking this one, but as you can see with the title I have no idea how this is called and I will edit the question whenever I can.[详细]

2023-03-15 20:46 分类：问答
Is there a scenario where an Abstract class is preferred over Interface

I am having a scenario where there are several subclasses which have got similar implementations and some extra methods for which the implementations differ with each subclass. I assume that an abstra[详细]

2023-03-15 09:27 分类：问答
WCF - DataContract by copy/paste original code or by auto-generated code for shared abstract class?

[DataContract] public abstract class FooBase { [DataMember] public int Bar { get; set; } } That is a base class that I use as the base class for other classes that are also DataContracts. Here\'s th[详细]

2023-03-14 01:00 分类：问答
What are the advantage if i use abstract class in php? [duplicate]

This question already has answers he开发者_运维问答re: Closed 11 years ago. Possible Duplicate: interface vs abstract class[详细]

2023-03-13 05:49 分类：问答
Interfaces and abstract class inheritance, implementation in extended classes

In every example I\'ve seen, extended classes implement the interfaces of their parents. For reference, the following example:[详细]

2023-03-13 04:18 分类：问答
C++ Design pattern for using a abstract class object in another class

I\'m having a class with 2 pure virtual methods and another class which needs to use an object of this class. I want to allow the user of this class to specify which derivation of the abstract class s[详细]

2023-03-13 00:54 分类：问答
Why can you cast to an abstract class

I\'m reading a book about data structures in java, and it\'s talking about iterators now. I saw the following code and it seems odd to me. In the following code, AbstractIterator is an abstract class[详细]

2023-03-12 21:01 分类：问答