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Base64 encoding in SQL Server 2005 T-SQL
...has already been answered, but I just spent more time than I care to admit coming up with single-line SQL statements to accomplish this, so I'll share them here in case anyone else needs to do the same:
-- Encode the string "TestData" in Base64 to get "VGVzdERhdGE="
SELECT
CAST(N'' AS XML).valu...
Preventing form resubmission
...irect the browser to Page2.
Method 2: Post + Redirect to self
This is a common technique on forums. Form on Page1 posts the data to Page2, Page2 processes the data and does what needs to be done, and then it does a HTTP redirect on itself. This way the last "action" the browser remembers is a sim...
Number of elements in a javascript object
...where) the number of elements in a javascript object?? (i.e. constant-time complexity).
6 Answers
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Is there a working C++ refactoring tool? [closed]
...It simply is broken. The refactoring options either don't show up or don't complete. There are strange error messages or none at all.
– Daniel Rose
Apr 11 '12 at 7:59
4
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How to check if an object is nullable?
...ue to an object variable.
Microsoft documentation: https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/nullable-types/how-to-identify-a-nullable-type
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Visual Studio debugging “quick watch” tool and lambda expressions
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Lambda expressions, like anonymous methods, are actually very complex beasts. Even if we rule out Expression (.NET 3.5), that still leaves a lot of complexity, not least being captured variables, which fundamentally re-structure the code that uses them (what you think of as variables be...
How to default to other directory instead of home directory
I am developing on a windows machine. The only place I need for linux command line is Git Bash. The problem is: When I open it, I am in the home directory. I have to change the directory to my workspace, like:
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The calling thread cannot access this object because a different thread owns it
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This is a common problem with people getting started. Whenever you update your UI elements from a thread other than the main thread, you need to use:
this.Dispatcher.Invoke(() =>
{
...// your code here.
});
You can also use c...
How to use GROUP BY to concatenate strings in SQL Server?
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Warning: mysql_connect(): [2002] No such file or directory (trying to connect via unix:///tmp/mysql.
...e or more apps is looking in the other location for it. Find out with this command:
ls -l /tmp/mysql.sock /var/mysql/mysql.sock
Rather than move the socket, edit config files, and have to remember to keep edited files local and away from servers where the paths are correct, simply create a symbol...