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by: dm_dal |
last post by:
Just a quick question regarding object scope and lifetime.
Given the following:
{
DataRow myRow = new DataRow();
...... do some stuff
{
myRow = new DataRow;
..... do some stuff
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by: Bob Altman |
last post by:
Hi all,
I have a basic question regarding holding references to objects in unmanaged
C++. Suppose my unmanaged C++ class has a method that accepts a reference
to an object as an argument, and stores the object reference in a stack
object, and another method that uses the stored objects in the stack object,
like this:
void MyClass::AcceptString(const string& myArg) {
m_myStack.push(myArg); // declared as stack<string> m_myStack
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by: Eduardo Azevedo |
last post by:
If I have a class with method Shared, when this objects are destroies what's
happend with the objects Shared?
How long is the lifetime of a function shared in the Class ?
there are no instantiate
tks
Eduardo R Azevedo
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by: anonymous.user0 |
last post by:
The way I understand it, if I have an object Listener that has
registered as a listener for some event Event that's produced by an
object Emitter, as long as Emitter is still allocated Listener will
stay alive. Is this correct?
If this is correct, I've got a problem. Let's say I've got an object
Customer that has an PurchaseList (Collection) of Purchase objects.
Now, these Purchase objects were pulled from a datasource Datasource.
The...
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by: cedgington |
last post by:
I wanted to take advantage of the large set of functionality offered by
the framework, so for my latest project I'm using managed C++ with .NET
v2. I'm using the gcnew operator in two different ways, and I'm
confused about the lifetime of objects and whether or not I should be
calling delete. Here are two examples:
ref class SYMBOL : public IComparable
{
public:
// Constructor / destructor
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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: 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: 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: 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: 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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