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by: john townsley |
last post by:
when using vectors with pointers of objects. is it best to create instances
then point to them or dynamic allocation upon creating a vector element.
I can do this, but is creating a vector with pointer to objects best done
like this...with dynamic allocation
vector<emp_class*> ptvector;
ptvector.push_back(new emp_class(4,"ee"));
cout<<ptvector->....
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by: Adam Hartshorne |
last post by:
Hi All,
I have the following problem, and I would be extremely grateful if
somebody would be kind enough to suggest an efficient solution to it.
I create an instance of a Class A, and "push_back" a copy of this into a
vector V. This is repeated many times in an iterative process.
Ok whenever I "push_back" a copy of Class A, I also want to assign a
pointer contained in an exisiting instance of a Class B to this
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by: verec |
last post by:
I just do not understand this error.
Am I misusing dynamic_cast ?
What I want to do is to have a single template construct
(with no optional argument) so that it works for whatever
T I want to use it with. Now, if that T happens to be some
subclass of a known base class (object, in this case), I
want to perform some extra stuff ...
I've read Faq#35, and the most natural solution would have
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by: jon wayne |
last post by:
Hi
I'm a little confused here about the lifetime of a static pointer to
member function,
Say,
I declare,define & initialize a static ptr to mem function in the
header file of a class(the class is a helper Singleton class, and is
created & deleted as and when required) - Where does the static pointer
point to when every single instance of the class is deleted.
I presume it'll be dangling pointer- as the code seg to which it's
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by: Alexei A. Frounze |
last post by:
Hi all,
I have a question regarding the gcc behavior (gcc version 3.3.4).
On the following test program it emits a warning:
#include <stdio.h>
int aInt2 = {0,1,2,4,9,16};
int aInt3 = {0,1,2,4,9};
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by: 2005 |
last post by:
Hi
I have two classes ( CNode & CAll ) and I created 2 objects for the
latter class, CAll.
CAll All_A, All_B;
class CAll {
public:
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by: cweisbrod |
last post by:
All,
I'm seeing something very strange and was hoping someone might have
some insight into the cause of what I'm seeing. I have the following
scenario:
Platform: Microsoft Windows XP Pro, Visual Studio 2005
Code:
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by: fungus |
last post by:
I mentioned earlier to day that I was moving some code
from VC++6 to VC++2005 and having trouble with the
new iterators. There's all sorts of problems cropping
up in the code thanks to this change.
a) With pointer-iterators you could set an iterator
to null to mark it as invalid, you can't do that
any more.
b) You can't use const_cast with iterators.
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by: Todd R. Jacobs |
last post by:
Hi group,
I had this with VS2003 Managed C++
pro-to-types:
===================================
TimeHandler.h
class TimeHandler
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by: autumn |
last post by:
Hi everybody,
I'm having problem passing pointer to member object as template argument, seems VC 2005 does not allow 'pointer to base member' to 'pointer to derived member' conversion in template arguments, is this VC specific or a standard c++ behavior?
the code looks like this:
class Base {
public:
int member;
};
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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...
|
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: 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: 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: 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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