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by: Dylan |
last post by:
I'd like to compare two containers. They should be considered
equivalent if both containers have the same number of elements with
the same values, no matter what order the values are in.
For instance the containers
A =
B =
are obviously equal, but so would be
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by: phil_gg04 |
last post by:
Dear C++ Experts,
Over the last couple of months I have been writing my first program
using shared memory. It has been something of an "in-at-the-deep-end"
experience, to say the least. At present the shared memory contains a
few fixed-size structs, but I really need to be able to store more
complex variable-sized data in there. So the next task is to work out
how to store C++ objects, and if possible STL containers, in this
shared...
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by: Matthias Kaeppler |
last post by:
Hi,
in my program, I have to sort containers of objects which can be 2000
items big in some cases. Since STL containers are based around copying
and since I need to sort these containers quite frequently, I thought
it'd be a better idea to manage additional containers which are
initialized with pointers to the objects in the primary containers and
sort those (only pointers have to be copied around then).
However, that also means if I...
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by: Gregory |
last post by:
I have a question about using STL containers in C++ class public
interface.
Lets say that I want to return some container from class method or
accept class method parameter as some container. For example:
class A
{
public:
const vector<int>& getTable() { return m_table; }
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by: bob |
last post by:
Hi,
Given:
1) Custom containers that have nothing to do with vector, deque, list,
map etc,
2) a custom version of new and delete defined for these containers,
customNew and customDelete, say. When an item is to be inserted/removed
into/from these custom containers, customNew and customDelete is
called.
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by: Michel Esber |
last post by:
Hello,
DB2 V8 FP12 LUW.
My system is under heavy wait-io times.
I have read the following article: http://tinyurl.com/p844z and it says
that prefetchsize should be the product of extentsize and the number of
containers.
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by: dragoncoder |
last post by:
Just a simple theoritical question to the experts.
What was the rationale behind making STL containers follow copy
semantics rather than reference semantics. References almost always
make things easier without much of overhead. Then why not reference ?
Thanks
/P
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by: Nindi73 |
last post by:
HI
If I define the class DoubleMap such that
struct DoubleMap : public std::map<std::string, double>{};
Is there any overhead in calling std::map member functions ?
Moreover are STL containers destructors virtual >
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by: jimxoch |
last post by:
Hi list,
Most STL containers are storing their data on the heap. (although some
std::string implementations are notable exceptions) Of course, using
the heap as storage increases flexibility and allows the handling of
much bigger amounts of data. However, there are cases where this turns
out to be inefficient for at least two reasons: A) Allocations and
deallocations on heap are much slower. B) Memory access on stack is
more cache...
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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...
|
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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...
|
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: 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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