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by: IHateSuperman |
last post by:
public class StaticField2{
public static void main(String args){
private int x, y; // <<== error 1
for ( y = 0 ; y < 100 ; y++){
x = StaticMethod();
System.out.println(" x = "+x);
}
}
public static int StaticMethod(){
private static int m = 0; // <<== error 2
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by: Alexander Mahr |
last post by:
Dear Newsgroup,
I'm somehow confused with the usage of the static keyword.
I can see two function of the keyword static in conjunction with a data
member of a class.
1. The data member reffers in all objects of this class to the same data
Or in other word by using the static keyword all objects of one class
can share data. (This is what I want)
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by: Eric |
last post by:
I have a static class member variable as follows:
struct A
{
static void Set (int i) { v = i; }
static int& Get () { return v; }
static int v;
};
int A::v; // define A::v in the cpp file
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by: Serge |
last post by:
Hi,
I have no problem creating a static member variable with integers, etc but
when I try the same with a vector then I always get linker errors that the
static member variable is unknown (unresolved external symbol)
Below is what an example of the code I use. Can somebody tell me what I am
doing wrong ?
Thanks very much in advance,
Serge
//myclass.h
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by: ank |
last post by:
Hi,
I was curious about how to define static data member of template class.
Should I put the definition in a separate source file or in the same
header file as its template class?
And when this data will be initialized if it is used across many
translation unit, assume that it has constructor and needs dynamic
initialization?
I have blindly searched for the answer but I still not thoroughly
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by: Rene |
last post by:
I jus realized that I can change the values of "static variables" and
"instance variable" through the standard constructor This means that
something like this will compile:
public class SomeClass
{
public SomeClass()
{
abc++; // Instance Variable
xyz++; // Static Variable
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by: mangalalei |
last post by:
A static data member can be of the same class type as that of which it
is a member. A nonstatic data member is restricted to being declared as
a pointer or a reference to an object of its class.
And I haved used the sizeof operator to test a class which has a static
data member, the class size is all the nonstatic data member except the
static data member.
In compiler's view, is the static data member constructed after the
whole class...
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by: John Goche |
last post by:
Hello,
I would like to know whethere there is a difference between
a const variable and a static const variable inside a class.
After all, if a variable is const in a class, the compiler can
always optimize and turn it into a static const variable to
save runtim memory/stack space since being const it
cannot be changed. (?)
Thanks,
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by: Jess |
last post by:
Hello,
I was told that if I declare a static class constant like this:
class A{
static const int x = 10;
};
then the above statement is a declaration rather than a definition.
As I've *defined* "x"'s value to be 10, isn't above statement a
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by: yanlinlin82 |
last post by:
I'd like to write all code of a class in only header file. But when
there is any static member varia ble, I have to define it in cpp file,
not the header file. Otherwise, the static member variable may be
duplicated because two or more cpp files may include the header.
How can I solve this without the cpp file, which used to define the
static member variable?
Thanks!
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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: 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: 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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