Recent questions tagged inheritance

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inheritance - How do you specify a different base class in .xaml files (Silverlight)?

How can you specify a common base class in .xaml files for seperate Silverlight Page classes? I have a ... Am I overlooking something obvious? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - C++ Calling a copy constructor on an unknown derived class through an abstract base class

I'm making a tree that has several different node types: a binary node, a unary node, and a terminal node. I ... copy constructor I need it to? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - C++: Accessing parent methods and variables

In which way should I access this parent method and parent variable? class Base { public: std::string mWords; ... what if there is ambiguity? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - How do you specify a different base class in .xaml files (Silverlight)?

How can you specify a common base class in .xaml files for seperate Silverlight Page classes? I have a ... Am I overlooking something obvious? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - ASP.NET MVC: Ignore custom attribute in a base controller class

I have a number of Controllers in my project that all inherit from a controller I've named BaseController. I wrote a ... 'm using MVC 1. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Java: Why doesn't deserialization invoke constructor & what's the best workaround?

The Java serialization spec for Java 1.5 said: For serializable objects, the no-arg constructor for the first non ... for any inputs in advance! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - How can I initialize a const variable of a base class in a derived class' constructor in C++?

I have an abstract C++ class with no constructor. It's supposed to be a base class so other classes can inherit from ... so, how can I do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - C#: How do I call a static method of a base class from a static method of a derived class?

In C#, I have base class Product and derived class Widget. Product contains a static method MyMethod(). I want ... method of a derived class? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Java - array of different objects that have the same method(s)

I am practicing inheritance. I have two similar classes that I'd like to assimilate into one array, so I thought ... in the long run. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - pass variable number of arguments in scala (2.8) case class to parent constructor

I was experimenting with variable constructor arguments for case classes in Scala, but am unable to pass them to ... possible to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Django: Creating a Mixin for Reusable Model Fields

I've got a few fields that I want to add to most every model in my project. For example, these fields are " ... models.... post_type = models... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - How can I implement an abstract singleton class in Java?

Here is my sample abstract singleton class: public abstract class A { protected static A instance; public static A ... 32bit to run these tests. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Python - inheriting from old-style classes

I am trying to connect via telnet to a laboratory instrument. I'd like to extend the Telnet class from the ... persists in these cases. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Python - inheriting from old-style classes

I am trying to connect via telnet to a laboratory instrument. I'd like to extend the Telnet class from the ... persists in these cases. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - What does "trait A <: B" mean?

In Scala, what does trait A <: B mean? Is it just the same as trait A extends B ? Edited to add: ... trait being declared, not a type parameter. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Objective-C: how to declare a static member that is visible to subclasses?

I'm declaring a family of static classes that deals with a communications protocol. I want to declare a ... are not seing the currentElement. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - C++ Disambiguation: subobject and subclass object

Basically what the title says. I have been referring to Base objects as subobjects. Is that correct and would it ... is right, anyway.. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - How to cast 'Class A' to its subclass 'Class B' - Objective-C

I'm using a framework which defines and uses 'ClassA', a subclass of NSObject. I would like to add some variables ... of what I'm asking here See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Java: protected access across packages

I would like to understand what's happening in the example below (where a protected member is being ... epc reference in UsesExtendedClass? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - printing in the same line in java

I have a base class called Items and 3 derived classes, and within the Items base class i have a print function of ... to be on the same line? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - c++ design: cast from base to derived class with no extra data members

I write quite a lot of code which processes message protocols. Quite often a message protocol will have a ... has no additional data members? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - C++: using a base class as the implementation of an interface

In C++ is it possible to use another base class to provide the implementation of an interface (i.e. abstract ... lot of extra overhead. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Is C++ allowed to increase the derived class size if there're no new member variables compared to the base class?

Suppose I have a base class with some member variables and no virtual functions: class Base { int member; }; and ... be equal to sizeof(Base)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - In C#, do you need to call the base constructor?

In C#, if I have an inherited class with a default constructor, do I have to explicitly call the base class' constructor ... / ... some code } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Skip before_filter in Rails

Names and objects have been simplified for clarity's sake. The basic concept remains the same. I have three ... still inheriting from animal? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Inner Classes vs. Subclasses in Java

Is there a situation where it is more beneficial to use an inner class over a subclass in Java (or vice- ... over inheritance (or vise versa)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - C++: Why does my DerivedClass's constructor not have access to the BaseClass's protected field?

I have a constructor attempting to initialize a field in a base class. The compiler complains. The field is ... . Thank you in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Python decorators that are part of a base class cannot be used to decorate member functions in inherited classes

Python decorators are fun to use, but I appear to have hit a wall due to the way arguments are ... current decorator implementation in Python? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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