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by: lawrence |
last post by:
How dangerous or stupid is it for an object to have a reference to the
object which contains it? If I have a class called $controllerForAll
which has an arrray of all the objects that exist, what happens if one
of those objects, when it is created, takes a reference to the object
that contains it? Do bad things happen?
class McShow {
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by: Jonathan |
last post by:
I am looking for a simple way to check if a database table exists. I
keep getting advice to use "Try.. Catch" and other error handling
methods, but I obviously don't want to have to display an error
message and stop the process every time someone loads the script after
the table is created because that would mean the page could only ever
run once which of course not the solution I was looking for. I simply
want to know how I can check...
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by: Mike |
last post by:
I´ve got a number of SPAN elements named "mySpan1", "mySpan2", "mySpan3"
etc, and want to set their "style.display" to "inline".
This works (only needs to work on IE5.5+):
for (var x = 1; x < 20; x++) {
document.all('mySpan'+x).style.display = "inline";
}
But I don´t know how many SPAN elements there are, so I need to set x to a
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by: Carl Fenley |
last post by:
I am successfully adding stored procedures to an Access database. However,
I need to be able to check if the stored procedure of the same name already
exists.
Is there a way to do this other than waiting for the OleDbException caused
when adding one that already exists?
Here is the code snippet:
Private Sub CreateStoredProcedures()
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by: jes |
last post by:
hi,
i have an open & delete btn. onclick of open as visio drawing opens in visio
& onclick of delete the drawing gets deleted from the filesystem. The problem
is i am unable to perform these actions if the file is already opened in
another instance of visio. how do i check if it's already opened and then
throw an error msg?
thanks
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by: John Salerno |
last post by:
What is the best way to check if a file already exists in the current
directory? I saw os.path.isfile(), but I'm not sure if that does more
than what I need.
I just want to check if a file of a certain name exists before the user
creates a new file of that name.
Thanks.
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by: byeung |
last post by:
Hi,
I am trying to check if a particular record already exists in an Access
database through Excel vba code. Through code obtained at another
forum, I got the following:
***********************************************************************
Sub TheButton()
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by: Larry |
last post by:
Thanks in advance.
what is the C# equivalent of the VB.net IsNothing(object) function?
just trying to check to see if an object instance already exists.
does someone have an example?
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by: bharathreddy |
last post by:
This article will explain you how to check weather a column already exists in a table before you add the column to the table using alter command.
Using the system tables you can check to see weather a column already belongs to a specific table. SYSCOLUMNS is the system table which stores all the table columns information, from this column you can check weather a specific column exists in a specific table.
...
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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: 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.
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: 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: 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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