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by: Christian Engström |
last post by:
If you have a function that returns something by value, the gcc compiler
(version 3.2.3 on Windows XP with MinGW) converts the returned value
from the type you specify in the code, to the const version of that type.
Is this a bug that is specific to gcc, or is it a flaw in the language
specification that gcc diligently implements? For example, the below
program produces the output
Constant
Mutable
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by: Dave |
last post by:
Hello NG,
In a thread I had started a long time ago, the conclusion had been reached
that there is no good way to select between calling const vs non-const
methods of the same name. (Of course, the object in question is non-const
so that both may be legally called.) However, it appears I have indeed
found a way to do it. I'm sure hoping nobody can poke any holes in my
little scheme, but I want to throw it out there to see if it stands...
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by: joe |
last post by:
hi,
after reading some articles and faq,
i want to clarify myself what's correct(conform to standard) and
what's not?
or what should be correct but it isn't simply because compilers don't
support.
(first i compiled them with g++3.x. ERR means compiler will bark,
otherwise it does accept it. Then the Comeau C/C++ 4.3.3 comes)
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by: herbertF |
last post by:
Hi guys,
In a program (not my own) I encountered the declaration of a constant
pointer to an array consisting of two other const pointers to arrays.
Not quite sure why they do it so complicated, but is it legal? Most
compilers accept it, but one doesn't recognize the rhs as a constant.
What are the requirements for the rhs in the declaration of a const
pointer? Is the following program legal C?
int main(int argc, char *argv) {
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by: Perro Flaco |
last post by:
Hi!
I've got this:
string str1;
char * str2;
....
str1 = "whatever";
....
str2 = (char *)str1.c_str();
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by: Kyku |
last post by:
Hello all,
I'm in a process of writing a small Linux C++ program for discovering
repeaded files over a filesystem. One part of this task is traversing a
directory structure. This is done by the following recursive function.
Since I'd like it to be general enough to handle function pointers and
function objects I've made it a template.
template <typename CallBack>
void Traverse(const std::string& path, CallBack& callback) throw
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by: wellingj |
last post by:
A little back ground on what I'm trying to do: I'm making a generic weighted graph class (vertexes and edges althought I don't call them that) to implement some pathfinding algorithms like A* and D*. I am also going to compare a grid map to a hex map, which is why I want to make a generic base graph class that gridmap and hexmap will inherit from.
so here is the error I'm getting:
TwoDMap.cpp: In member function 'void TwoDMap::setArc(const...
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by: subramanian100in |
last post by:
The following is a beginner's question.
Suppose TYPE1 and TYPE2 are two types for which suitable ctors and
operator= are defined.
Suppose I have
class Test
{
TYPE1 mem1;
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by: Kira Yamato |
last post by:
It is erroneous to think that const objects will have constant behaviors too.
Consider the following snip of code:
class Person
{
public:
Person();
string get_name() const
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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...
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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: 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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