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Add column with constant value to pandas dataframe [duplicate]
...he proper way to assign a new column of zeros. In general, pandas tries to do as much alignment of indices as possible. One downside is that when indices are not aligned you get NaN wherever they aren't aligned. Play around with the reindex and align methods to gain some intuition for alignment work...
What's the difference between a file descriptor and file pointer?
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@nvl: fildes is surely available to Windows, e.g. msdn.microsoft.com/en-us/library/z0kc8e3z%28VS.80%29.aspx
– kennytm
Mar 11 '10 at 9:16
2
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Call Activity method from adapter
...MethodCaller) mContext).yourDesiredMethod();
}
}
});
You are done. If you need to use this adapter for activities which does not require this calling mechanism, the code will not execute (If check fails).
share...
How can I change the file type association of an existing file in WebStorm?
... file with no extension and I chose the wrong file type association. Text Document I think. I renamed it to have the .js extension which is what I wanted, but now it's stuck without any syntax highlighting. WebStorm doesn't treat it as a javascript file. I can't find anywhere to change how WebSt...
Install gitk on Mac
Does anyone know how to install gitk on Mac?
13 Answers
13
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Why use AJAX when WebSockets is available?
...nnection between a browser and server. WebSockets opens up new application domains to browser applications that were not really possible using HTTP and AJAX (interactive games, dynamic media streams, bridging to existing network protocols, etc).
However, there is certainly an overlap in purpose bet...
C# how to create a Guid value?
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If you, like me, make the mistake of doing (new Guid().toString()) you will get 0000-00000-00000-00000. You need to do Guid.NewGuid().toString()
– Joao Carlos
Jan 3 '15 at 15:10
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How to export a Vagrant virtual machine to transfer it
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You have two ways to do this, I'll call it dirty way and clean way:
1. The dirty way
Create a box from your current virtual environment, using vagrant package command:
http://docs.vagrantup.com/v2/cli/package.html
Then copy the box to the oth...
When to use setAttribute vs .attribute= in JavaScript?
Has a best-practice around using setAttribute instead of the dot ( . ) attribute notation been developed?
9 Answers
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What does java:comp/env/ do?
...ing https://web.archive.org/web/20140227201242/http://v1.dione.zcu.cz/java/docs/jndi-1.2/tutorial/beyond/misc/policy.html
At the root context of the namespace
is a binding with the name "comp",
which is bound to a subtree reserved
for component-related bindings. The
name "comp" is short ...