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C# equivalent of the IsNull() function in SQL Server
... I tried to use the null-coalescing operator but kept getting the error Operator '??' cannot be applied to operands of type 'bool?' and 'int'. The error was misleading. The problem was that I was trying to assign a an int in the right-hand operand position to a boolean variable. I had to ch...
Intellisense and code suggestion not working in Visual Studio 2012 Ultimate RC
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When I try that, I get this: Error 1: Task List Display Settings: The tasklist format has changed. Which led me to this: stackoverflow.com/questions/28189563/… ie. Just have to make sure you don't have a project open. If you do and got that error, r...
Java Annotations
...t on the code but it can be used by the compiler to generate a warning (or error) if the decorated method doesn't actually override another method. Similarly, methods can be marked obsolete.
Then there's reflection. When you reflect a type of a class in your code, you can access the attributes and ...
Why doesn't “System.out.println” work in Android?
...e one-letter methods in Log corresponding to the following levels:
e() - Error
w() - Warning
i() - Information
d() - Debug
v() - Verbose
wtf() - What a Terrible Failure
The documentation says the following about the levels:
Verbose should never be compiled into an application except during d...
git: updates were rejected because the remote contains work that you do not have locally
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I had the same error with github and I fixed it with this command, @theeastcoastwest why are you saying this is dangerous? what is your reason"
– simon
Jan 7 at 7:45
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How can I access my localhost from my Android device?
...en mobile and laptop are on the same WiFi), I get a ERR_CONNECTION_REFUSED error. That is, my MacBook seems to refuse the connection attempt from my mobile.
ADB Reverse Socket (Android only)
This solution works for me (tested with a MacBook):
Connect Android mobile device with USB cable to lap...
gem install: Failed to build gem native extension (can't find header files)
... What you say is required, but it's ruby-devel that's needed to fix the error message in question.
– Edward Anderson
Oct 25 '12 at 18:38
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How do you check in python whether a string contains only numbers?
...(that is a unicode superscript zero), does pass isdigit, but raises a ValueError if passed to int().
– danpalmer
Mar 4 '19 at 12:04
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push multiple elements to array
I'm trying to push multiple elements as one array, but getting error
9 Answers
9
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Best practices for SQL varchar column length [closed]
...d, etc.
Basically, just come up with reasonable business constraints and error on a slightly larger size. As @onedaywhen pointed out, family names in UK are usually between 1-35 characters. If you decide to make it varchar(64), you're not really going to hurt anything... unless you're storing this...