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by: Pmb |
last post by:
I've been working on creating a Complex class for my own learning purpose
(learn through doing etc.). I'm once again puzzled about something. I can't
figure out how to overload the assignment operator.
Here's what I'm trying to do. I've defined class Complex as
class Complex {
friend ostream &operator<<( ostream &, Complex & );
public:
Complex( float = 0.0, float = 0.0 );
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by: raca |
last post by:
I am trying to create a generic SOA ServiceInvoker that will accept an
XML string that will be used to deserialize an object generated by
XSDObjectGen. The hierarchy goes like this:
Requests...Request (1..n)... Payload (1)... PayloadCollection (1) ...
Payload (0...n)
I have the knowledge about the root object Responses which I can create
directly. However I don't know what is the type for Request and Payload
(These will be versioned...
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by: mswlogo |
last post by:
There are many threads on the lack of a true unmanaged C++ const like
behavior in C# (.Net) and that's not what this topic is about. The
topic is, what is the best practical way to live with it.
Some developers feel any function that returns an object should copy
it. This gets pretty expensive performance wise and development wise
and hard to enforce. It also defeats a lot of what C# intentionally
did.
Other developers feel you should...
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by: SA |
last post by:
Hi all:
I have an object of a base class that needs to be cast to an object of a
specialized class.
What is the best way to do this? (I thought about creating a constructor in
the specialized class that takes an argument of the type of the base class
and then copy property values over, but that seems like a hassle)
--
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by: Rouben Rostamian |
last post by:
The main() function in the following code defines an m by n
matrix, assigns value(s) to its elements, then passes the matrix
to function foo().
For whatever it's worth, I have declared foo() so as to make
it treat its first argument as a "read-only" object, that is,
foo() can read but not alter the matrix.
I have a problem, however, with /calling/ foo. If I call
foo as foo(a,m,n), my compiler (gcc) complains about:
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by: Prateek |
last post by:
Hey...
Can anybody tell me why "<<" operator is used behind cout?
Like:
cout<<"Welcome";
My one friend told me that it "shifts the bits"...But it's not very
clear to me...Can anybody tell?
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by: =?gb2312?B?wNbA1rTzzOzKpg==?= |
last post by:
i wrote:
-----------------------------------------------------------------------
----------------------------------------
unsigned char * p = reinterpret_cast<unsigned char *>("abcdg");
sizeof(reinterpret_cast<const char *>(p));
-----------------------------------------------------------------------
----------------------------------------
the compiler tells me that "reinterpret_cast from type "const char * "
to type "unsigned char *"...
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by: Jess |
last post by:
Hi,
I read about operator overloading and have a question regarding
"operator->()". If I have two classes like this:
struct A{
void f();
};
struct B{
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by: Bill Davy |
last post by:
I want to be able to write (const char*)v where v is an item of type
Class::ToolTypeT where ToolTypeT is an enumeration and I've tried
everything that looks sensible. There's an ugly solution, but surely this is
possible?
I could define an operator<< but for various reasons, I really want to
convert to a 'const char*' (to embed into a string which becomes part of a
window's caption, etc).
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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: 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: 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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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