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by: Alex Vinokur |
last post by:
Various forms of argument passing
=================================
C/C++ Performance Tests
=======================
Using C/C++ Program Perfometer
http://sourceforge.net/projects/cpp-perfometer
http://alexvn.freeservers.com/s1/perfometer.html
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by: Dave |
last post by:
I'm currently working on a small project (admitedly for my CS class)
that compares the time difference between passing by value and passing
by reference. I'm passing an array of 50000 int's. However, since in
C++ an array is passed by reference by default I need to embed the
array into a struct in order to pass it by value. The problem is that
I get a segmentation error when doing so. I'm using the Dev-c++
compiler. Any ideas?
...
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by: domeceo |
last post by:
can anyone tell me why I cannot pass values in a setTimeout function
whenever I use this function it says "menu is undefined" after th
alert.
function imgOff(menu, num) {
if (document.images) {
document.images.src = eval("mt" +menu+ ".src")
}
alert("imgOff_hidemenu");
hideMenu=setTimeout('Hide(menu,num)',500);
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by: Adrian |
last post by:
I am trying to pass the address of a C++ function into a Fortran
routine to enable the Fortran routine to call this C++ function. I
have to do it this way as our build process does not allow circular
dependencies of DLL's.
Does anyone know how to do this, I have tried everything in my book.
I have a C++ function GetP:
DllExport void GetP()
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by: Victor Bazarov |
last post by:
In the project I'm maintaining I've seen two distinct techniques used for
returning an object from a function. One is
AType function(AType const& arg)
{
AType retval(arg); // or default construction and then..
// some other processing and/or changing 'retval'
return retval;
}
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by: Charles Sullivan |
last post by:
The library function 'qsort' is declared thus:
void qsort(void *base, size_t nmemb, size_t size,
int(*compar)(const void *, const void *));
If in my code I write:
int cmp_fcn(...);
int (*fcmp)() = &cmp_fcn;
qsort(..., fcmp);
then everything works. But if instead I code qsort as:
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by: LP |
last post by:
Hello,
Here's the scenario:
Object A opens a Sql Db connection to execute number of SqlCommands. Then it
needs to pass this connection to a constructor of object B which in turn
executes more commands on the same connection.
I have an understanding that if SqlConnection is passed as "value"
(unboxed), object B will create its own copy of SqlConnection, so when
object A closes its connection, it remains open for object B's copy. Is this
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by: ged |
last post by:
Hi,
i am a oo (c#) programmer, and have not used javascript for a while and
i cant work out how javascript manages its references. Object
References work for simple stuff, but once i have an object collection
and stanrd using it it starts to fall apart.
Clearly there is something about javascript's usage of passing "By ref"
that i am not getting. i have had a look on the web and found some
examples, but i cant see why my code does not...
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by: User1014 |
last post by:
Since you can pass a function to a ... erm...... function....
how to you use the result of a function as the argument for another
function instead of passing the actual function to it.
i.e.
function foo2(){}
function foo(func){}
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by: dave_dp |
last post by:
Hi, I have just started learning C++ language..
I've read much even tried to understand the way standard says but still
can't get the grasp of that concept.
When parameters are passed/returned by value temporaries are
created?(I'm not touching yet the cases where standard allows
optimizations from the side of implementations to avoid copying)
If so, please quote part of the standard that says that.
Assuming it is true, I can imagine two...
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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: 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: 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: 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: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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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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