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Append column to pandas dataframe

...method discards the unique index and has even weirder side effects in more complicated cases, though. For instance if I had two columns named 'data', grouping/summing would start summing up the different data columns, which is almost certainly not what you want. String data would be concatenated. ...
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What are the best practices for JavaScript error handling?

...n Enterprise JavaScript Error Handling can be found at http://www.devhands.com/2008/10/javascript-error-handling-and-general-best-practices/ In short it summarizes: Assume your code will fail Log errors to the server You, not the browser, handle errors Identify where errors might occur Throw your...
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How to get a list of properties with a given attribute?

... @bjhuffine msdn.microsoft.com/en-us/library/… – Marc Gravell♦ Nov 3 '14 at 21:53 2 ...
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How to access pandas groupby dataframe by key

... add a comment  |  72 ...
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How to subtract a day from a date?

... if you don't ignore timezones then the answer is more complex. – jfs Aug 21 '14 at 13:39 Also, ho...
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How to make overlay control above all other controls?

...top a higher ZIndex. From MSDN: <Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" WindowTitle="ZIndex Sample"> <Canvas> <Rectangle Canvas.ZIndex="3" Width="100" Height="100" Canvas.Top="100" Canvas.Left="100" Fill="blue"/> <Rectangle Canvas.ZInd...
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Why would a post-build step (xcopy) occasionally exit with code 2 in a TeamCity build?

...rror will appear as "exited with code 2". When you run the same xcopy at a command prompt, you'll see that xcopy is asking for a response of file or directory. To resolve this issue with an automated build, you can echo in a pre-defined response with a pipe. To say the thing you are copying is a f...
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How do I compare two files using Eclipse? Is there any option provided by Eclipse?

How do I compare two files using Eclipse? 5 Answers 5 ...
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Will using goto leak variables?

...ect, which the language can handle regardless because they do not require "complex" construction: int main() { goto lol; { int x; lol: x = 0; } } // OK [n3290: 6.7/3]: It is possible to transfer into a block, but not in a way that bypasses declarations with initializati...
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How do I compile C++ with Clang?

... have installed Clang by using apt-get in Ubuntu, and I can successfully compile C files using it. However, I have no idea how to compile C++ through it. What do I need to do to compile C++? ...