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by: Christophe Barbe |
last post by:
I am not clear about friend functions of a template class.
GCC (3.3.2) wants me to add <> after the friend function names in the
class declaration and VisualC++ doesn't like that.
template <class T>
class test{
test(void);
~test(void);
friend bool operator== <> (const test<T> &p1, const test<T> &p2);
}
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by: Dmitry D |
last post by:
Hi all,
I'm having problems with declaring a template friend function. It seems like
I've done everything as explained
in C++ FAQ, but still, I'm getting the linker error (unresolved external
'aFunc(A<char> const&)' ) in
the following sample program. Tried it on GCC and Borland's compiler.
Can somebody please show me the correct way to fix this?
Thanks,
Dmitry
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by: Jason Heyes |
last post by:
The following program does not compile. Apparantly "t" is inaccessible.
#include <iostream>
using namespace std;
template <class T> class Foo
{
T t;
public:
Foo(T t_) : t(t_) { }
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by: Trevor Lango |
last post by:
What is the appropriate syntax for placing a friend function that includes
as one of it's parameters a pointer to the class object itself within the
template class?
I have the following:
//****************************************************
// testClass.h
//****************************************************
#ifndef TESTCLASS_H
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by: Gary |
last post by:
Hi,
I am a Chinese student, I have a problem with the following code
//The follwing code in StaticSearch.h:
//
template <class Type> class dataList;
//
template <class Type> class Node //Êý¾Ý±íÖнáµãÀàµÄ¶¨Òå
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by: franklini |
last post by:
hello people i. can anybody help me, i dont know what is wrong with
this class. it has something to do with the me trying to override the
input output stream. if i dont override it, it works fine. i would
forget overriding it but i have to do it because its a coursework. here
is a simple version of the class
#include <iostream>
#include <string>
#include <vector>
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by: Hamilton Woods |
last post by:
Diehards,
I developed a template matrix class back around 1992 using Borland C++ 4.5
(ancestor of C++ Builder) and haven't touched it until a few days ago. I
pulled it from the freezer and thawed it out. I built a console app using
Microsoft Visual C++ 6 (VC++) and it worked great. Only one line in the
header file had to be commented out.
I built a console app using Borland C++ Builder 5. The linker complained of
references to...
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by: syang8 |
last post by:
Dear all,
I am trying to design classes with stream support. Basically, I want
the operator << work for the base class and all the derived classes.
If the base class is a template class, and the operator << is also
designed as a template function. The program has following linking
errors:
"error LNK2019: unresolved external symbol "class
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by: =?ISO-8859-1?Q?Dar=EDo_Griffo?= |
last post by:
I'm having an error with this code
#include <iostream>
template < typename Tclass TestOpTemplate
{
public:
friend std::ostream& operator<< <>(std::ostream& os, const
TestOpTemplate<T>& m);
};
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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.
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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: 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: 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: 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: 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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