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by: Emmanuel Thomé |
last post by:
This is a comment aside the empty class behavior FAQ.
I understand there are a fair number of reasons which make empty
classes have non-zero size (except as base classes). If ``class foo''
were of size 0, then:
- an object of type foo may lie at the same address as another.
- arrays of foo objects would have size 0, and pointer arithmetic on
array cell would break.
- requirements of the standard explicitly stating objects have
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by: Markus Dehmann |
last post by:
I have a two different value types with which I want to do similar
things: store them in the same vector, stack, etc. Also, I want an <<
operator for each of them.
class Value{}; // this would be "public interface Value{}" in Java!
class IntValue : public Value{
private:
int _value;
public:
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by: Stefan Weiss |
last post by:
Hi.
(this is somewhat similar to yesterday's thread about empty links)
I noticed that Tidy issues warnings whenever it encounters empty
tags, and strips those tags if cleanup was requested. This is okay in
some cases (such as <tbody>), but problematic for other tags (such as
<option>). Some tags (td, th, ...) do not produce warnings when they are
empty.
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by: Søren M. Olesen |
last post by:
Hi
Can someone tell me how to implement something similar to String.Empty ??
Given a class called myValue
Public class myValue
private id as integer
private value as string
end class
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by: Dennis |
last post by:
I have a public variable in a class of type color declared as follows:
public mycolor as color = color.Empty
I want to check to see if the user has specified a color like;
if mycolor = Color.Empty then.....
or
if mycolor is Color.Empty then .......
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by: avranju |
last post by:
Hi,
We have a few exception marker classes in a project that are used only
to throw exceptions. I mean stuff like this (this may not be such a
hot idea for doing exception handling - a simple enum might suffice
since we aren't sending any data with the exception - but that's sort
of off-topic I suppose):
class Whoops{};
class GeeDontKnowHowToDoThat{};
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by: meendar |
last post by:
what will a object of an Empty class( contain nothing), do on
default.What are all the default methods it calls. what is the use of
creating the object for an empty class?
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by: kumar.senthil |
last post by:
Hi,
I'm using XmlSerializer to create an object from the XML string. I
would like to know whether I can get a null value for an empty XML
element.
Actually the XmlSerializer assigns "" (empty string) for a string
if the corresponding element is missing in the XML.
Input XML:
<DemoClass><A>some value</A><B></B><DemoClass>
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by: anonieko |
last post by:
In the past I always used "" everywhere for empty string in my code
without a problem.
Now, do you think I should use String.Empty instead of "" (at all
times) ?
Let me know your thoughts.
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by: Dhiru1009 |
last post by:
Hi guys,
I am trying to build a user registration form using PHP and MYSQL but encountring a problem.
When I click on submit with empty fields it adds records to database also it doesn't matter what information I put it always add records to database when I click on submit. What can I do to make sure user will not be able to add records to database until he enters the right information?
I am posting my code for you guys to have a look...
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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: 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...
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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: 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: 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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