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by: Jason Heyes |
last post by:
To my understanding, std::vector does not use reference counting to avoid
the overhead of copying and initialisation. Where can I get a reference
counted implementation of std::vector? Thanks.
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by: Janina Kramer |
last post by:
hi ng,
i'm working on a multiplayer game for a variable number of players and on the client side, i'm using a std::vector<CPlayer> to store
informatik about the players. CPlayer is a class that contains another std::vector<CPosition>. Because one of the players is the
client itself (and the size of the vector<CPlayer> doesn't change during a game), i thought i could store a
std::vector<CPlayer>::iterator "localplayer" that points to the...
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by: Anonymous |
last post by:
Is there a non-brute force method of doing this?
transform() looked likely but had no predefined function object.
std::vector<double> src;
std::vector<int> dest;
std::vector<double>::size_type size = src.size();
dest.reserve(size);
for (std::vector<int>::size_type i = 0;
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by: Michael Hopkins |
last post by:
Hi all
I want to create a std::vector that goes from 1 to n instead of 0 to n-1.
The only change this will have is in loops and when the vector returns
positions of elements etc. I am calling this uovec at the moment (for
Unit-Offset VECtor). I want the class to respond correctly to all usage of
STL containers and algorithms so that it is a transparent replacement for
std:vector.
The options seems to be:
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by: Pelle Beckman |
last post by:
Hi all,
I have a few - beginners - questions:
* Why can't I put object references in a std::vector,
i.e std::vector<MyClass&> ?
At least in doesnt work in gcc (mingw, win32)
* What's the difference between passing
member inits in the c-tor funtion from
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by: Ross A. Finlayson |
last post by:
I'm trying to write some C code, but I want to use C++'s std::vector.
Indeed, if the code is compiled as C++, I want the container to
actually be std::vector, in this case of a collection of value types or
std::vector<int>.
So where I would use an int* and reallocate it from time to time in C,
and randomly access it via , then I figure to copy the capacity and
reserve methods, because I just need a growable array.
I get to considering...
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by: zl2k |
last post by:
hi, c++ user
Suppose I constructed a large array and put it in the std::vector in a
function and now I want to return it back to where the function is called.
I can do like this:
std::vector<int> fun(){
//build the vector v;
return v;
}
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by: atreya |
last post by:
Hi,
I'm trying to figure out if there are any differences between the
implementation of resize(0) and clear() that a programmer using
std::vector should be aware of!
Could there be any advantage/disadvantage of using one over the other?
I checked the VS7.1 implementation, in which I couldn't find any
difference. Both of them are effectively calling erase(begin(), end()).
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by: Peter Olcott |
last post by:
I am trying to refer to the same std::vector in a class by two different names,
I tried a union, and I tried a reference, I can't seem to get the syntax right.
Can anyone please help? Thanks
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by: jubelbrus |
last post by:
Hi
I'm trying to do the following.
#include <vector>
#include <boost/thread/mutex.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/tuple/tuple.hpp>
class {
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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: 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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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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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