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by: Nimmi Srivastav |
last post by:
There's a rather nondescript book called "Using Borland C++" by Lee
and Mark Atkinson (Que Corporation) which presents an excellent
discussion of overloaded new and delete operators. In fact there are
quite a few things that I learned that I did not know before. For
example, while I knew that the new and delete operators can be
overloaded for classes, I did not know that that the global new and
delete operators can also be overloaded. ...
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by: Emanuel Ziegler |
last post by:
Hello,
I want to do some mathematics with functions. In my case the function
classes are very complex, but this simple example has the same problems.
To allow calculations that begin with a double, I have to define a global
operator+ (or -*/) and special function classes.
--- source begins here ---
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by: Mohanasundaram |
last post by:
int i = 10;
int main()
{
int i = 20;
return 0;
}
Hi All,
I want to access the global variable i inside the main. Is there
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by: Javaman59 |
last post by:
I saw in a recent post the :: operator used to reach the global namespace, as
in
global::MyNamespace
I hadn't seen this before, so looked it up in MSDN, which explained it
nicely. My question is, do "global" and "::" always go together? Is there any
other use for these operators, than as a pair?
TIA,
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by: Roman Ziak |
last post by:
Hello,
there were times when I used to be looking for a way to access
JavaScript Global object similar to those found in VBScript or PHP
($GLOBALS). At present this has only academic value for me. I was doing
research on JavaScript inheritance recently (simplifying it in
particular) and after reading 10.1.1, 10.1.3 and some other sections of
ECMA262 I got a hint on accessing global object from different than
global scope.
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by: ryan_melville |
last post by:
Hi,
Should I put the operator<<() for my class (which is in a namespace) in
the namespace or make it global? If I understand the lookup rules
correctly:
If I make it global, it may be hidden if called from within a different
namespace and that other namespace has any operator<<() defined. That
doesn't seem good.
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by: Eric Lilja |
last post by:
>From a book, I know the following is true for the comparison operators:
An overloaded operator that is a class member is only considered
when the operator is used with a *left* operand that is an object
of that class.
And is that also the reason why if you use class member functions for
operators << and >you have to write:
someclass << cout;
someclass >cin;
?
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by: mrstephengross |
last post by:
Hi folks. I've got a weird situation--gcc doesn't like the folllowing
code snippet, but I don't know if it's correct or not. Here's the
situation:
In the global namespace, I've got a operator<< declared that will send
a vector<Tto a std::ostream.
In the "outer" namespace, I've got a operator<< declared that will
send a Thing<Tto a std::ostream.
In the "outer" namespace, I've got a function "foo" that tries to send
a vector<Tto a...
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by: weaknessforcats |
last post by:
C++: The Case Against Global Variables
Summary
This article explores the negative ramifications of using global variables. The use of global variables is such a problem that C++ architects have called it polluting the global namespace. This article explores what happens when the global namespace becomes polluted and how to avoid this condition.
The opinions expressed in this article are those of the author alone although many have...
|
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: 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: 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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