virtual-functions

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Use-cases of pure virtual functions with body?

I recently came to know that in C++ pure virtual fun开发者_开发百科ctions can optionally have a body.[详细]

2022-12-26 13:30 分类：问答
How to override virtual function in good style? [C++]

guys I know this question is very basic but I\'ve met in few publications (websites, books) different style of override virtual function. What I mean is: if I have base class:[详细]

2022-12-23 09:18 分类：问答
virtual function issue

I am using native C++ with VSTS 2008. A quick question about virtual function. In my sample below, any differences if I d开发者_运维问答eclare Foo as \"virtual void Foo()\" or \"void Foo()\" in class[详细]

2022-12-22 10:18 分类：问答
overriding protected internal with protected!

This is an extension for this question asked an hour ago. We cannot modify the access modifiers, when overriding a virtual method in derived class. Consider Control class in System.Web.UI namespace[详细]

2022-12-22 07:28 分类：问答
Why do we need virtual functions in C++?

I\'m learning C++ and I\'m just get开发者_开发问答ting into virtual functions. From what I\'ve read (in the book and online), virtual functions are functions in the base class that you can override in[详细]

2022-12-22 06:25 分类：问答
Can a class member function template be virtual?

I have heard that C++ class member function templates can\'t be virtual.Is this true? If th开发者_Go百科ey can be virtual, what is an example of a scenario in which one would use such a function?Tem[详细]

2022-12-22 00:11 分类：问答
Exception specification when overriding a virtual function

Consider the following code: class A { public: virtual void f() throw ( int ) { } }; class B: public A { public:[详细]

2022-12-21 21:27 分类：问答
Are there cases where a class declares virtual methods and the compiler does not need to use a vptr?

I was wondering if there is a possible optimization where the compiler does not need to assign a vptr to an instantiated object even though the object\'s type is a class with virtual methods.[详细]

2022-12-21 11:48 分类：问答
Detecting a misspelt virtual function

I\'ve been caught by this problem more than once: class A{ public: virtual ~A() {} virtual int longDescriptiveName(){ return 0; }[详细]

2022-12-19 12:56 分类：问答
Virtual Table C++

I read a lot of people writing \"a virtual table exists for a class that has a virtual function declared in it\".[详细]

2022-12-19 05:23 分类：问答