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by: Sean Dettrick |
last post by:
Hi,
apologies for yet another Singleton posting.
From reading around previous postings etc, I've cobbled together two
Singleton template definitions - one that returns a reference, and one
that returns a pointer. I understand the pointer one and it works,
but the reference one doesn't work as I expect. Can anybody explain
this to me? ...
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by: Ethan |
last post by:
Hi,
I have a class defined as a "Singleton" (Design Pattern). The codes are
attached below.
My questions are:
1. Does it has mem leak? If no, when did the destructor called? If yes, how
can I avoid it? Purify does not show it has mem leak.
// test if singleto class has mem leakage
#include <iostream>
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by: Harry |
last post by:
Hi ppl
I have a doubt on singleton class. I am writing a program below
class singleton
{
private:
singleton(){};
public:
//way 1
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by: Gaensh |
last post by:
HI,
I have a singleton pattern to acess my database the following is
the sample code use to implement singleton pattern
public class DataAccessHelper
{
private static DataAccessHelper instance;
/// <summary>
/// public property that can only get the single instance of this
class.
/// </summary>
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by: Manuel |
last post by:
Consider the classic singleton (from Thinking in C++):
-----------------------------------------------------
//: C10:SingletonPattern.cpp
#include <iostream>
using namespace std;
class Singleton {
static Singleton s;
int i;
Singleton(int x) : i(x) { }
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by: Raider |
last post by:
I need to have one object for each template argument(s) used. For
example, I need to have one object of int. I tried the following code
and it gives me all I want with Visual C++ 7.1. But is it portable???
Will all compilers produce code that prints "single"?
Instancing of object right in header file (that can be include multiple
times -...
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by: Damien |
last post by:
Hi all,
I'm using a pretty standard C++ Singleton class, as below:
template <typename T>
class Singleton
{
public:
static T* Instance()
{
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by: weaknessforcats |
last post by:
Design Pattern: The Singleton
Overview
Use the Singleton Design Pattern when you want to have only one instance of a class. This single instance must have a single global point of access. That is, regardless of where the object is hidden, everyone needs access to it.
The global point of access is the object's Instance() method.
...
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by: stevewilliams2004 |
last post by:
I am attempting to create a singleton, and was wondering if someone
could give me a sanity check on the design - does it accomplish my
constraints, and/or am I over complicating things. My design
constraints/environment are as follows:
1) Everything is single-threaded during static initialization (as in
prior to the open brace of main)
2)...
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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...
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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. ...
|
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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...
|
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...
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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...
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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...
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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...
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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: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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