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by: Shubhadeep |
last post by:
Dear Sir,
Can anybody please tell me why cannot we have virtual destructors like
virtual constructors in C++ ?
Thanx,
Regards,
Shubhadeep
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by: qazmlp |
last post by:
When a member function is declared as virtual in the base class, the
derived class versions of it are always treated as virtual.
I am just wondering, why the same concept was not used for the
destructors.
What I am expecting is, if the destructor is declared as virtual in
base, the destructors of all its derived classes also should be
virtual always.
What exactly is the reason for not having it so?
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by: pmizzi |
last post by:
When i compile my program with the -ansi -Wall -pedantic
flags,
i get this warning: `class vechile' has virtual functions
but non-virtual destructor, and the same with my
sub-classes. But when i add a virtual destructor like this :
" virtual ~vechile". I get this error:
Undefined first referenced
symbol in file
vtable for vechile /var/tmp//ccC9yD6Z.o
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by: Zeng |
last post by:
I often run into situation where I would like to have a method such as that
has derived behavior similar to destructors in c++, is that possible?
public BaseClass
{
private int m_dataInBase;
public BaseClass()
{m_dataInBase = 0}
public void SetDataBase( int val ) { m_data = val; }
virtual public void ClearData()
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by: vaividhya |
last post by:
We can have virtual destructors.Why we can't have virtual constructors?
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by: druberego |
last post by:
I read google and tried to find the solution myself. YES I do know that
you can get undefined references if you:
a) forget to implement the code for a prototype/header file item, or
b) you forget to pass all the necessary object files to the linker.
Neither of those are my problem. Please bear with me as the question
I ask is rather long and I think it's beyond a CS101 level of linker
stupidity. If it is a stupid CS101 mistake I'm making...
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by: Markus Svilans |
last post by:
Hello,
My question involves virtual functions and inheritance.
Suppose we have a class structure, that consists of "data" classes, and
"processor" classes. The data classes are derived from BufferBase, and
customized in order to be able to a type of data (of any kind, such as
chunks of audio samples from a sound card). The processor classes are
derived from ProcessorBase, and are customized to handle
BufferBase-derived objects. Each...
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by: Jess |
last post by:
Hello,
If I have a class that has virtual but non-pure declarations, like
class A{
virtual void f();
};
Then is A still an abstract class? Do I have to have "virtual void
f() = 0;" instead? I think declaring a function as "=0" is the same
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by: Shraddha |
last post by:
What is the use of "PURE vitual distructors"?
And why we can not have vitual constructors?
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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