|
by: Newsgroup - Ann |
last post by:
Gurus,
I have the following implementation of a member function:
class A
{
// ...
virtual double func(double v);
void caller(int i, int j, double (* callee)(double));
void foo() {caller(1, 2, func);
|
by: Ben |
last post by:
Hi, there.
Recently I was working on a problem where we want to save generic
closures in a data structure (a vector). The closure should work for
any data type and any method with pre-defined signature.
When developing this lib, I figured that the
pointer-to-member-function, although seemingly an attractive solution,
does not work well for us.
|
by: Steve Rencontre |
last post by:
I can't for the life of me see how to do pointer-to-member when the
member is actually part of an embedded structure.
That is, if I have:
struct S1 { int a; };
struct S2 { S1 s; int b; };
how can I get a pointer to the a in an S2?
|
by: WaterWalk |
last post by:
Hello. I am rather confused by the type of a pointer to class data
member. Many c++ texts say that pointer to data member has a special
syntax. For example the following class:
class MyClass
{
public:
int n;
};
The pointer to MyClass.n shall be defined like this:
|
by: WaterWalk |
last post by:
Hello. I thought I understood member function pointers, but in fact I
don't. Consider the following example:
class Base
{
public:
virtual ~Base() {}
};
class Derived : public Base
{
|
|
by: Tim Frink |
last post by:
Hi,
I'm experimenting with function pointers and found
two questions. Let's assume this code:
1 #include <iostream>
2 class A;
3
4 ////////////////////////////////////////////
5 class B
|
by: huili80 |
last post by:
Say I have two classes:
class A
{
public:
int x;
};
class B
{
|
by: Immortal Nephi |
last post by:
I would like to design an object using class. How can this class
contain 10 member functions. Put 10 member functions into member
function pointer array.
One member function uses switch to call 10 member functions. Can
switch be replaced to member function pointer array?
Please provide me an example of source code to show smart pointer
inside class. Thanks....
|
by: Immortal_Nephi |
last post by:
I had a lot of research to see how function pointer works. Sometimes,
programmers choose switch keyword and function in each case block can
be called. Sometimes, they choose ordinary function pointer array
instead of switch.
They believe that ordinary function pointer is much faster than
switch. Think of one variable called selectFunction. selectFunction
variable can be the range of 0 through 1,000 or more.
Load selectFunction...
|
by: ghulands |
last post by:
I am having trouble implementing some function pointer stuff in c++
An object can register itself for many events
void addEventListener(CFObject *target, CFEventHandler callback,
uint8_t event);
so I declared a function pointer like
typedef void (CFObject::*CFEventHandler)(CFEvent *theEvent);
|
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,...
|
|
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...
|
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,...
|
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...
|
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...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
|
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
|
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...
|