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by: mangi03 |
last post by:
Hi,
I came acrosss g++ compile errors whenever I make a function call by
reference and found out from the test program that compiler is
treating the function argument differently when another function call
funcRet()is made which returns the expected argument type for the
function call by reference funcByRef(class A&);
The only way to get around this probelm is to first call the
funcRet(), assign its value to a variable and pass that...
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by: Randell D. |
last post by:
Folks,
I'm sure this can be done legally, and not thru tricks of the trade - I
hope someone can help.
I'm writing a 'tool' (a function) which can be used generically in any
of my projects. When it completes, it can call a success, or a failure
function. The names of these success, or failure functions will differ,
and I'd like to know how I can pass the name of a function to my tool,
and how my tool can call the function, using that...
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by: hasho |
last post by:
Why is "call by address" faster than "call by value"?
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by: ThomasR |
last post by:
I understand that virtual methods on inherited objects are slower than
non-virtual methods because of the indirection required to support the
call.
However, when looking at IL code produced by the compiler, I notice
that all methods on object variables use callvirt instead of call,
regardless of whether the method is truly virtual or not.
I assume this allows .NET to check if the object reference is null or
not before invoking the...
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by: ALI-R |
last post by:
Hi All,
First of all I think this is gonna be one of those threads :-) since I have
bunch of questions which make this very controversial:-0)
Ok,Let's see:
I was reading an article that When you pass a Value-Type to method call
,Boxing and Unboxing would happen,Consider the following snippet:
int a=1355;
myMethod(a);
......
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by: mitchellpal |
last post by:
i am really having a hard time trying to differentiate the
two..........i mean.....anyone got a better idea how each occurs?
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by: ravi |
last post by:
Hi,
i am a c++ programmer,
now i want to learn programming in c also.
so can anybody explain me the difference b/w call by reference and
call by
pointer (with example if possible).
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by: Nehil |
last post by:
Does C follow call by value convention or call by reference?
i see that there is nothing like reference in C standard but it is
referenced.
still, what should be the answer for the above question?
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by: Saeed Amrollahi |
last post by:
Dear All
Hi
I have learned when an object is big, I should pass the object using a
reference or pointer to it rather than calling by value.
In the following code, I don't gain cosiderable performance with call-
by-reference vs. call-by-value. Indeed, the perforamnce is absolutely
unconsiderable:
#include <vector>
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by: coolguyaroundyou |
last post by:
Does C have Call-By-Reference for a function??
I think it doesn't. Am I right?
|
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...
|
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: 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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