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by: k-man |
last post by:
Hi!
I'll try to make it short:
1) is memset() optimised is some way (I suppose at various level
depending of implementations) and if so, to what level?
Is it faster to memset() 4kbytes of memory to 0 or go in a for(;;)
loop for 10 (or 100) iteration to clean up individual integers?
2) This one confuses me even after all those years. I usually avoid
it with classes but here I have no option.
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by: Gent |
last post by:
I have two questions which are very similar:
Is it possible to return an object in C++. Below is part of my code
for reference however I am more concerned about the concept. It seems
like the function below is returning a pointer to pointers who are
GUID. I am trying to write a wrapper to use in my VB code and what I
would prefer to do is be able to return an array of GUID. I remember
(not sure) that the concept of arrays does not really...
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by: Matteo Settenvini |
last post by:
Ok, I'm quite a newbie, so this question may appear silly. I'm using
g++ 3.3.x.
I had been taught that an array isn't a lot different from a pointer
(in fact you can use the pointer arithmetics to "browse" it). So I
expected that when I run this program, I get both c1.A and c2.A
pointing to the same address, and changing c1.A means that also c2.A
changes too.
----- BEGIN example CODE -----------
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by: Peter Seaman |
last post by:
I understand that structures are value types and arrays and classes are
reference types. But what about arrays as members of structures i.e. as in
C
struct x
{
int n;
int a;
}
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by: Mark |
last post by:
Hi
From what I understand, you can pass arrays from classic ASP to .NET using
interop, but you have to change the type of the.NET parameter to object.
This seems to be because classic ASP passes a variant containing an array,
and interop expects a parameter of type object if you are passing a variant
(you are expected to cast it to the correct type in your code). I'd like to
find a way of passing arrays so that you don't need to change...
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by: Peter Olcott |
last post by:
I need to know how to get the solution mentioned below to work. The
solution is from gbayles Jan 29 2001, 12:50 pm, link is provided below:
> http://groups.google.com/group/comp.lang.c++/msg/db577c43260a5310?hl
>
>Another way is to create a one dimensional array and handle the
>indexing yourself (index = row * row_size + col). This is readily
>implemented in template classes that can create dynamically allocated
>multi-dimensional...
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by: PeterW |
last post by:
I have a class which uses three other classes, two of which are used in
arrays. This class is only ever used for incoming messages. All classes
inherit from ISerializable and impliment GetObjectData(). All classes use
the attribute and have a default constructor.
When deserializing from an xml string that represents a complex object, I am
getting NullReferenceExceptions that seem to be related to the arrays. The
object is created...
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by: Peter Duniho |
last post by:
This is kind of a question about C# and kind of one about the framework.
Hopefully, there's an answer in there somewhere. :)
I'm curious about the status of 32-bit vs 64-bit in C# and the framework
classes. The specific example I'm running into is with respect to byte
arrays and the BitConverter class. In C# you can create arrays larger than
2^32, using the overloaded methods that take 64-bit parameters. But as near
as I can tell,...
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by: Olumide |
last post by:
Hello -
I have two classes A and B as follows:
class B{
public:
~B(){ cout << "destroying B" << endl; }
};
class A{
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by: mike3 |
last post by:
(I'm xposting this to both comp.lang.c++ and comp.os.ms-
windows.programmer.win32
since there's Windows material in here as well as questions related to
standard
C++. Not sure how that'd go over at just comp.lang.c++. If one of
these groups is
too inappropriate, just take it off from where you send your replies.)
Hi.
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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...
|
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: 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: 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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