pure-virtual

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C++ pure virtual methods

Consider this demo program: #include <stdio.h> class Base { public: virtual int f(int) =0; virtual int f(){ return f(0); }[详细]

2023-03-10 02:41 分类：问答
How do I call all functions from sub-classes when they were defined as pure virtual in the super-class?

The main question is how do I implement startTest() so that it calls runTest in all the subclasses.Thanks![详细]

2023-03-06 10:30 分类：问答
C++ pure virtual function have body [duplicate]

This question already has answers here: Pure virtual function with implementation (10 answers) Closed 3 year开发者_StackOverflows ago.[详细]

2023-02-21 05:15 分类：问答
Implement a pure virtual method in Objective-C

I want to go 开发者_运维知识库to there. Seriously though, how does one implement a pure virtual method in an \"Apple\" way? Do you use a Protocol with your base class and throw exceptions on those met[详细]

2023-02-15 13:18 分类：问答
C++'s pure virtual function implementation and header files

I\'m having some trouble implementing pure virtual functions inherited from some abstract class, when the classes in question are divided into *.h and *.cpp files. The compiler (g++) tells me that the[详细]

2023-02-03 18:39 分类：问答
Vtable placement of completely pure-virtual class

According to my (limited) knowledge of the C++ spec, the vtable of a class with virtual members is placed at开发者_C百科 the definition of the first non-pure non-inline virtual method. How do compiler[详细]

2023-02-03 02:17 分类：问答
Why do I get linker errors trying to build C++ code using pure virtual functions within a template?

In an application I\'m currently writing, I created a template class with a pure virtual function, then an another class inheriting an instance of the former and implementing the virtual function. The[详细]

2023-01-26 04:22 分类：问答
A virtual member function is used if it is not pure?

C++03 3.2.2 ...An object or non-overloaded function is used if its name appears in a potentially-evaluated expression. A virtual member function is used if it is not pure...[详细]

2023-01-24 15:18 分类：问答
interface overhead

I\'ve a simple class that looks like Boost.Array. There are two template parameters T and N. One drawback of Boost.Array is, that every method that uses such an array, has to be a template with parame[详细]

2023-01-23 10:40 分类：问答
C++: pure virtual assignment operator

why if we have pure virtual assignment operator in a base class, then we implement that operator on the derived class, it give linker error on the base class?[详细]

2023-01-17 04:22 分类：问答