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by: Dave Rahardja |
last post by:
OK, so I've gotten into a philosophical disagreement with my colleague at
work. He is a proponent of the Template Method pattern, i.e.:
class foo
{
public:
void bar() { do_bar(); }
protected:
virtual void do_bar() {}
};
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by: Zach |
last post by:
Using Dev-C++ 4.9.8.5 I get error:
Compiler: Default compiler
Executing g++.exe...
g++.exe "C:\winroot\src\c++\stupid_tricks\functor_trick.cpp" -o
"C:\winroot\src\c++\stupid_tricks\functor_trick.exe"
-I"C:\DEV-CPP\include\c++" -I"C:\DEV-CPP\include\c++\mingw32"
-I"C:\DEV-CPP\include\c++\backward" -I"C:\DEV-CPP\include"
-L"C:\DEV-CPP\lib"
C:/winroot/src/c++/stupid_tricks/functor_trick.cpp: In member function
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by: daniel.w.gelder |
last post by:
I wrote a template class that takes a function prototype and lets you
store and call a C-level function, like this:
inline string SampleFunction(int, bool) {..}
functor<string (int, bool)> myFunctor = SampleFunction;
string result = myFunctor(7, true);
Works great thanks to the help from this group. Here's the guts so far
for two-arity:
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by: Daniel Kay |
last post by:
Hello!
I have written two template classes which implement the observerpattern
in C++. I hope I manage to desribe the problem I have.
template<class T> class Observer {
/* ... */
};
template<class T> classSubject {
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by: Niels Dekker - no reply address |
last post by:
The following attempt to pass my template "Base" as a template template
argument was rejected by Microsoft VC++ 8.0 (2005), while it still works
on VC++ 7.1 (2003). Is it correct C++? And is there a workaround?
template <typename T> class Base
{
};
template <typename U, template <typename> class TempTemp>
class Derived;
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by: Jerome Durand |
last post by:
Hello,
I'm trying to write something along the following lines
but I cannot get this to compile.
template <typename derivedstruct Base {
typedef typename derived::valueType valueType;
virtual valueType Value() = 0;
};
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by: subramanian100in |
last post by:
Suppose the following program is named x.cpp
#include <iostream>
#include <vector>
using namespace std;
template <class T>
class Vec : public vector<T>
{
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by: subramanian100in |
last post by:
consider the following program
#include <iostream>
using namespace std;
class Rec
{
public:
Rec(int arg = 10) : val(arg) { }
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by: BSand0764 |
last post by:
I'm getting an error that I can't seem to resolve. When I compile the
Functor related logic in a test program, the files compile and execute
properly (see Listing #1).
However, when I incorporate the same logic within my simulation, the
class that implements the functor logic has problems compiling. I get
the following errors:
-- Building myTest.cpp --
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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: 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: 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: 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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