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by: Stephan Diehl |
last post by:
I have a question about metaclasses:
How would be the best way to "merge" different metaclasses?
Or, more precisely, what is the best way to merge metaclass functionality?
The idea is basicly the following:
One has several (metaclass) modules that implements an interesting feature.
Lets say, I have a metaclass L, that adds logging capabilities to all method
calls and another one, called P, that creates properties on the fly.
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by: John Perks and Sarah Mount |
last post by:
Trying to create the "lopsided diamond" inheritance below:
>>> class B(object):pass
>>> class D1(B):pass
>>> class D2(D1):pass
>>> class D(D1, D2):pass
Traceback (most recent call last):
File "<stdin>", line 1, in ?
TypeError: Error when calling the metaclass bases
Cannot create a consistent method resolution
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by: Tony Johansson |
last post by:
Hello Experts!!
Here we use multiple inheritance from two classes.We have a class named
Person at the very top
and below this class we have a Student class and an Employee class at the
same level.
There is a class TeachingAssistent that use multiple inheritance from both
Student and Employee.
There is a method named getName is class Person.
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by: Tony Johansson |
last post by:
Hello Experts!
I just play around just to try to understand this about multiple
inheritance.
You have all the class definition below and at the bottom you have the main
program.
So here I use multiple inheritance.
One top class called MBase and below this we have D1 and D2 on the same
level.
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by: Tony Johansson |
last post by:
Hello Experts!
It it correct to say that a solution to the diamond problem is to use
virtual inheritance with virtual base classes.
//Tony
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by: emma middlebrook |
last post by:
Hi
I come from a C++ background and so am familiar with the 'dreaded
inheritance diamond' i.e. the ambiguity of which data to use when a
class appears twice in the hierarchy. Here's a link for anyone not
familiar: http://www.parashift.com/c++-faq-lite/multiple-inheritance.html#faq-25.8
..
Base
/ \
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by: Pallav singh |
last post by:
I am Facing Problem while creating object of Diamond Ring problem
solving using Template
Kindly let me known where i am committing ERROR
Thanks
Pallav
#include<iostream.h>
#include<string.h>
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by: weird0 |
last post by:
How does C++ and C# solve the Diamond problem? With the help of
interfaces that is.
Can anyone elaborate .......
Regards
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by: Rocketmagnet |
last post by:
Hi all,
I have been kind of forced (honestly) into writing a class structure
which contains a Diamond of Death, and I'm not entirely sure what to
do about it. This is a simplified version of my class structure:
class entity
{
public:
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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: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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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: Hystou |
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: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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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: 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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