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Replacing column values in a pandas DataFrame

I'm trying to replace the values in one column of a dataframe. The column ('female') only contains the values 'female' and 'male'. ...
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How to prevent Node.js from exiting while waiting for a callback?

...hat occurs, allowing node to exit silently. This is a sneaky bug, that is one that the module developer might not run into during development, as it will occur less often in busy systems with many queues as it will be rare for all of them to be empty at the critical time. A possible fix/bug detect...
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Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta

I had a Macintosh I used to develop iPhone apps with using XCode 4. I now have a new Macintosh with a new install of... everything. ...
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Check number of arguments passed to a Bash script

...to it. This has already been suggested in the comments by ekangas but someone edited this answer to have it with -1 as the returned value, so I might as well do it right. -1 though accepted by Bash as an argument to exit is not explicitly documented and is not right to be used as a common suggestio...
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Why are empty catch blocks a bad idea? [closed]

...umes two things: 1. That the exception being thrown is indeed a meaningful one and that the one who wrote the code that throws knew what he was doing; 2. That the exception is indeed an "error condition" and is not abused as control flow (although this is a more specific case of my first point). ...
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Why would I use Scala/Lift over Java/Spring? [closed]

...and useful, especially since Scala has a builtin language-level XML mode. One can write XML inline within Scala methods, including variable bindings in braces. This can be delightful for very simple XML services or mockups of services -- you can bang out a suite of HTTP response actions all in one...
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How do you assert that a certain exception is thrown in JUnit 4 tests?

...pect an exception only somewhere in your code, and not a blanket like this one. – Oh Chin Boon Jun 27 '11 at 14:50 4 ...
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Reorder levels of a factor without changing order of values

... I have a very strange situation where the ´reorder´ works on one dataset, not on another. On the other dataset, it throws an error "Error in tapply(X = X, INDEX = x, FUN = FUN, ...) : argument "X" is missing, with no default". Not sure what the solution to this problem is. I can't find...
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Why does Unicorn need to be deployed together with Nginx?

..., nginx will buffer it from (and spoon feed to) the client. Without nginx, one of your unicorns will be tied up during uploads/downloads. – BraveNewCurrency Jul 22 '13 at 1:34 10 ...
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What is the reason for having '//' in Python? [duplicate]

I saw this in someone's code: 5 Answers 5 ...