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by: Robin Forster |
last post by:
I have two classes:
aule_gl_window (parent class)
and
aule_button (sub class)
I want to call the super class (parent) constructor code from the sub
class constructor.
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by: Edward Diener |
last post by:
Coming from the C++ world I can not understand the reason why copy
constructors are not used in the .NET framework. A copy constructor creates
an object from a copy of another object of the same kind. It sounds simple
but evidently .NET has difficulty with this concept for some reason. I do
understand that .NET objects are created on the GC heap but that doesn't
mean that they couldn't be copied from another object of the same kind when...
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by: ctick |
last post by:
When defining a clas and no constructor and destructor provided, compiler
generates both.
What're the need for this since they do nothing as to
constructing/destructing an obejct.
What's happening in constructor/destructor if they both are defaulted and
empty?
Thanks!
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by: Eric Lilja |
last post by:
Hello!
Consider the following complete program (with sample output). There's
something wrong with my call to std::copy() in the copy constructor of
the Unit class. It fails to copy the list. I could solve it by looping
manually through the argument's list and call push_back for each
element, but I'd like to know what's wrong with my std::copy() call.
Here's the code with sample output:
#include <algorithm> /* std::copy() */
#include...
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by: Peter |
last post by:
I want to copy a parent class instance's all datas to a child's. It's
actually a C++'s copy constructor. But why the following code does not
work - there is a compile error! How it should look like?
(The background is I don't know (I don't care indeed) all members in
DataGrid, so I don't want to copy all members in DataGrid one by one.)
public class GridEx : DataGrid
{
public GridEx()
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by: Ben Blank |
last post by:
I'm writing a family of classes which all inherit most of their methods and
code (including constructors) from a single base class. When attempting to
instance one of the derived classes using parameters, I get CS1501 (no method
with X arguments). Here's a simplified example which mimics the
circumstances:
namespace InheritError {
// Random base class.
public class A {
protected int i;
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by: flamexx7 |
last post by:
In the programme below is it possible to call copy constructor of class A,
inside copy constructor of class B.
#include <iostream>
using namespace std;
class A{
int a;
public:
A(int temp=0):a(temp){}
A(A& right):a(right.a){}
};
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by: craig |
last post by:
During construction of an object "parent", if you create a subobject
that stores a pointer to the parent (through the "this" pointer), will
that pointer be valid when the subobject is later called?
class Parent
{
Parent::Parent() { child = new Child( this) };
Child *child;
};
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by: Jeroen |
last post by:
Hi all,
I'm trying to implement a certain class but I have problems regarding
the copy ctor. I'll try to explain this as good as possible and show
what I tried thusfar. Because it's not about a certain code syntax but
more a 'code architecture' thing , I'll use simple example classes
(which are certainly not complete or working...) just to illustrate the
idea (and I may make some mistakes because I'm not that experienced...).
The...
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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: 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: 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: 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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