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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)

I'm reading some automated weather data from the web. The observations occur every 5 minutes and are compiled into monthly files for each weather station. Once I'm done parsing a file, the DataFrame looks something like this: ...
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What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?

What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time? 13 Answers ...
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How do I trim leading/trailing whitespace in a standard way?

Is there a clean, preferably standard method of trimming leading and trailing whitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution. ...
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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?

I first noticed in 2009 that GCC (at least on my projects and on my machines) have the tendency to generate noticeably faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), and I have been wondering ever since why. ...
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CSS hexadecimal RGBA?

I know you can write ... 12 Answers 12 ...
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100% width Twitter Bootstrap 3 template

I am a bootstrap newbie and I have a 100% wide template that I want to code with bootstrap. The first column begins at the left corner and I have a Google map the stretches to the rightmost. I thought I could do this with container-fluid class, but that doesn't seem to be available any longer. I h...
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How to programmatically set drawableLeft on Android button?

I'm dynamically creating buttons. I styled them using XML first, and I'm trying to take the XML below and make it programattic. ...
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How to read the content of a file to a string in C?

What is the simplest way (least error-prone, least lines of code, however you want to interpret it) to open a file in C and read its contents into a string (char*, char[], whatever)? ...
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Extracting text OpenCV

I am trying to find the bounding boxes of text in an image and am currently using this approach: 10 Answers ...
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How to smooth a curve in the right way?

Lets assume we have a dataset which might be given approximately by 9 Answers 9 ...