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How to find keys of a hash?
I know in javascript Objects double as hashes but i have been unable to find a built in function to get the keys
9 Answers...
Add custom messages in assert?
... << ", line " << line << "\n";
abort();
}
}
Now, you can use this
M_Assert(ptr != nullptr, "MyFunction: requires non-null argument");
And in case of failure you will get a message like this:
Assert failed: MyFunction: requires non-null argument
Expected: pt...
Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (38)
...er from the command line rather than powering off the server.
shutdown -h now
This will stop the running services before powering down the machine.
Based on Centos, an additional method for getting it back up again when you run into this problem is to move mysql.sock:
mv /var/lib/mysql/mysql.so...
Should I use 'has_key()' or 'in' on Python dicts?
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has_key() is now removed in Python 3
– Vadim Kotov
Nov 14 '19 at 15:21
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There is no ViewData item of type 'IEnumerable' that has the key 'xxx'
... "text-danger" })
</div>
</div>
Now if we remove this statement:
ViewBag.OperatorId = new SelectList(db.Operators, "OperatorId", "OperatorSign", number.OperatorId);
from back of the following statement (in our controller) :
return View();
we will see ...
Is there a way to recover from an accidental “svn revert”?
...tus "added", but the file will remain in this directory, only status is unknown("?")
Platform / Software exception: Using TortoiseSVN on Windows, Revert first throws the files into Recycle Bin and then reverts them. You can dig into the Recycle Bin to recover the files.
...
Apache VirtualHost 403 Forbidden
...ore declaring the virtualhost.
Drove me nuts for a long time too. Don't know why. It's a Debian thing.
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Tomcat startup logs - SEVERE: Error filterStart how to get a stack trace?
...2localhost.org.apache.juli.FileHandler, java.util.logging.ConsoleHandler
Now the full stacktrace appears in the IntelliJ output:
Dec 27, 2011 12:02:45 PM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter filterChainProxy
org.springframework.beans.factory.No...
What is the recommended way to use Vim folding for Python code
...ldmethod=indent for Python. Then, in your .vimrc, set foldmethod=manual. Now, you can fold in both Python and non-Python with spacebar mapping
– Lionel
Jun 21 '12 at 21:54
a...
How to resize a custom view programmatically?
...s much better than the other answers because this code doesn't require to know the exact type of the parent ViewGroup.
– Bart Burg
Feb 2 '16 at 9:18
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