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The cast to value type 'Int32' failed because the materialized value is null
...from u in context.User
join ch in context.CreditHistory on u.ID equals ch.UserID
where u.ID == userID
select (int?)ch.Amount).Sum() ?? 0;
This first casts to int? to tell the C# compiler that this expression can inde...
Comparing Timer with DispatcherTimer
... DispatcherTimer, and I want to have a timer not bound to the UI, should I call it in a separated thread by using System.Threading.Timer or still DisptacherTimer?
– paradisonoir
Jul 10 '09 at 20:14
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git: fatal: Could not read from remote repository
... @user61629: I know I'm late to the party, but you should consider using private/public key pairs instead of passwords.
– code_dredd
Apr 22 '16 at 22:06
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Hide all but $(this) via :not in jQuery selector
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$(this).siblings().hide();
Traversing/Siblings
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How to kill a process running on particular port in Linux?
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This fuser 8080/tcp will print you PID of process bound on that port.
And this fuser -k 8080/tcp will kill that process.
Works on Linux only. More universal is use of lsof -i4 (or 6 for IPv6).
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Prevent users from submitting a form by hitting Enter
...preferred over keyup as the keyup is too late to block form submit. Historically there was also the keypress, but this is deprecated, as is the KeyboardEvent.keyCode. You should use KeyboardEvent.key instead which returns the name of the key being pressed. When Enter is checked, then this would chec...
Installing PDO driver on MySQL Linux server
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Basically the answer from Jani Hartikainen is right! I upvoted his answer.
What was missing on my system (based on Ubuntu 15.04) was to enable PDO Extension in my php.ini
extension=pdo.so
extension=pdo_mysql.so
restart the web...
Getting rid of bullet points from
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Assuming that didn't work, you might want to combine the id-based selector with the li in order to apply the css to the li elements:
#otis li {
list-style-type: none;
}
Reference:
list-style-type at the Mozilla Developer Center.
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
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You can add ORDER BY NULL to the GROUP BY to avoid the sort.
– Ariel
Aug 20 '14 at 3:21
Sti...
No identities were available - administrator request
I had problems while "archiving" my app. I think there are invalid profiles because of iPhone Update to 5.1 and XCode update to 4.2.2.
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