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What is the difference between NaN and None?

... a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead nan is assigned. Surely None is more descriptive of an empty cell as it has a null value, whe...
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IntelliJ IDEA generating serialVersionUID

... I have reinstalled IDEA and removed plug-ins and it helps me. Tnx a lot. – Kirill Bazarov Oct 16 '12 at 12:10 5 ...
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Is it possible to dynamically compile and execute C# code fragments?

...gments to a text file (or any input stream), and then execute those dynamically? Assuming what is provided to me would compile fine within any Main() block, is it possible to compile and/or execute this code? I would prefer to compile it for performance reasons. ...
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Programming with white text on black background?

... It's actually white on black, or rather green or amber on black, that is the traditional way. I've used them all. :) I believe that the use of black on white started in word processors, because it's a lot easier on your eyes when you...
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Why does Git tell me “No such remote 'origin'” when I try to push to origin?

...tps://github.com/VijayNew/NewExample.git)... provided that remote repo actually exists! However, it seems that you never created that remote repo on GitHub in the first place: at the time of writing this answer, if I try to visit the correponding URL, I get Before attempting to push to that remot...
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Get source JARs from Maven repository

...e" afterwards and then refresh your project in eclipse--saves you from manually attaching sources to each file. – unigeek Apr 3 '14 at 15:06 1 ...
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set up device for development (???????????? no permissions)

... Nothing worked for me until I finally found the answer here: http://ptspts.blogspot.co.il/2011/10/how-to-fix-adb-no-permissions-error-on.html I'm copying the text here in case it disappears in the future. Create a file named /tmp/android.rules with the fol...
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How to redirect 'print' output to a file using python?

... will 'print' the output for each of my .bam file while I want to redirect ALL these output to one file. So I tried to put ...
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How to unit test abstract classes: extend with stubs?

... Write a Mock object and use them just for testing. They usually are very very very minimal (inherit from the abstract class) and not more.Then, in your Unit Test you can call the abstract method you want to test. You should test abstract class that contain some logic like all other ...
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How to close TCP and UDP ports via windows command line

...t the remote machine, the network card, the network cable, and your OS can all cause the socket to close. Consider also that Fiddler and Desktop VPN software can insert themselves into the network stack and show you all your traffic or reroute all your traffic. So all you really need is either fo...