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by: Chris Connett |
last post by:
I have an interesting problem with eval().
---Background Info---
The program I'm working on launches a separate process with a popen to
do some highly specialized processing of input, then this process
leaves resultant data structured in files, in python syntax, at a
known absolute path, which is then read in, eval()'ed, and processed
further. It works fine when there are no errors in processing by this
external program, but when there...
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by: VMI |
last post by:
How can I validate a null string or an empty string in the same IF
statement?
If I use this:
if (myString.Trim().Length <= 0 || myString == null)
{
//do stuff
}
I'll get a run-time error because I can't trim (or get the length) of a Null
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by: Dan Bass |
last post by:
which one do you use and why?
MyString == null || MyString == ""
vs
MyString == null || MyString.Length == 0
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by: M D |
last post by:
You know how you assume you know until you find out you don't know.
Well, I typed into a function definition "..., new String("")).
I know what I want. Everyone reading this knows what I want. However,
the 1.0 compiler has no idea what I want.
Can anyone share with me the syntax that will actually communicate the
concept to the compiler, please?
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by: Adam Knight |
last post by:
Very basic question!!
How do i check for an empty string in vb.net?
Ie:
If(e.Item.DataItem.Item(3) ?) Then
End If
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by: Tan |
last post by:
I am using ObjectDataSource bind to DetailView which will contain one of the
column with the value type is date. whenver the value of this column is
empty . then it will be display the date in the format ( 01/01/0001), How
can I convert it to empty string or just string?
Thank you very much
tan
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by: shapper |
last post by:
Hello,
I need to check if a string is empty.
Should I use:
String.IsNullOrEmpty(MyString) or MyString Is Nothing?
What is the difference?
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by: tomlebold |
last post by:
Are the following two validation the same:
1) IsNull(Me.ColumnName) and Me.ColumnName = ""
2) Me.ColumnName """
It would seem to be better to use: Me.ColumnName """
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by: lphang |
last post by:
I am reading a simple text file that will contains three set of string values
as follow:
"1234567", "ABC123456", ""
I have my codes as follow trying to check for an empty string, with the input string as above, I can never get it to display "testid is empty", Any idea why the test failed?:
FileData = open(filename, "r")
Filecontents = FileData.readline().strip()
FileData.close()
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by: Jay |
last post by:
For a column that contains a string (let's say varchar), is there any
performance advantage in not allowing nulls, and using an empty string ("")
to instead?
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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: 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 most users, this new feature is actually very convenient. If you want to control the update process,...
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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: 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 the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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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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