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by: Prabu |
last post by:
Hi,
I'm new to python, so excuse me if i'm asking something dumb.
Does python provide a mechanism to implement virtual functions?
Can you please give a code snippet also...:)
Thanx in advance
-Prabu.
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by: vijay |
last post by:
I have a doubt with size of classed with virtual functions
I have declared A,A1,A2 ,B , C, D some classes with no varaibles but a
vitual function each,
The size of A is as expected 4 bytes with one vtbl ptr
BUt when I derive the class B from class A (both have 1 virtual function
each ) the size remains still as 4 bytes .
class A = 4 bytes
class B :public A = 4 bytes
class...
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by: DaKoadMunky |
last post by:
I was recently looking at some assembly code generated by my compiler. When
examining the assembly code associated with constructors I noticed that the
dynamic-dispatch mechanism was enabled before member initialization but after
base initialization.
To speak in implementation details the virtual function table pointer for
objects being constructed was set before member initialization but after base
initialization.
Curiousity then...
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by: Milan Cermak |
last post by:
Hi all,
I have sort of philosophical question.
Contructor and destructor behavior points me to this.
Is table of virtual methods held in object?
Do I get it right that every created object has its own table of virtual
methods? Even if they are of one class?
Thanks for reactions,
Milan Cermak
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by: Neil |
last post by:
I've been discussing here a SQL 7 view which scrolls slowly when linked to
an Access 2000 MDB. After trying various things, I've distilled it down to
the following: when the linked view has a virtual primary key, it is slow;
when there is no virtual primary key, it scrolls quickly.
Looking at Profiler, I see that when there is no virtual primary key, Access
sends a simple select command to SQL Server. However, when there is a
virtual...
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by: Frank-René Schäfer |
last post by:
Case:
-- class X has occupies tiny amount of memory:
sizeof(X) is only a little greater than sizeof(void*).
-- X instantiates thousands of objects and memory does matter.
-- The class has a virtual destructor, and therefore, a pointer
to a virtual function table.
|
by: Adrian Herscu |
last post by:
Hi all,
In which circumstances it is appropriate to declare methods as non-virtual?
Thanx,
Adrian.
|
by: Bruno van Dooren |
last post by:
Hi all,
i am having a problems with inheritance.
consider the following:
class A
{
public:
A(int i){;}
};
|
by: sojin |
last post by:
Hi all,
I'm a new to c++... and I've some doubts on "virtual" topics.
1) Can abstract base class have V-table?
Here's the way,,
Class CTemp{
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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
|
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: 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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last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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