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How to add an empty column to a dataframe?
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@Griff - I've now updated my answer to be more accurate and explicit about version compatability issues. Thanks for highlighting this.
– emunsing
Nov 26 '19 at 21:36
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How to cherry-pick from a remote branch?
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This is incorrect. Because now you are merging the HEAD of master into zebra instead of just selected commits.
– Chef Pharaoh
Apr 28 '17 at 15:29
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Devise Secret Key was not set
...ration back end. Active Admin in turn uses Devise for user authentication. Now, when I try to deploy the app using capistrano on the VPS server, I get the below error:
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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...
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.
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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
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How to convert an int array to String with toString method in Java [duplicate]
...rOfInts = Arrays.toString(intArray).replaceAll("\\[|\\]|,|\\s", "");
and now you have a String which can be parsed back to java.lang.Number, for example,
long veryLongNumber = Long.parseLong(intStr);
Or you can use the java 8 streams, if you hate regex,
String strOfInts = Arrays
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File tree view in Notepad++
...es .Net v2 )
step-2) Again on Notepad++ Toolbar:
Explorer->Explorer
Now you can view files with tree view.
Update:
After adding Explorer, right click to edit a file in Notepad++ may stop working. To make it work again, restart Notepad++ afresh.
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