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Pandas dataframe get first row of each group
I have a pandas DataFrame like following.
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How to convert a char array back to a string?
I have a char array:
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Bash conditionals: how to “and” expressions? (if [ ! -z $VAR && -e $VAR ])
...wanted to make sure an argument existed which was working well with [ -e $VAR ] , but it turns out that was also evaluating as true on an empty string; which I do not want.
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How to change size of split screen emacs windows?
I have emacs split horizontally - on top I'm editing Perl code, the bottom is the shell. By default emacs makes the two windows equal in size, but I'd like the shell buffer smaller (maybe half the size?). I was wondering how I could do that.
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How do you add a timer to a C# console application
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Alternative to google finance api [closed]
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Why does Convert.ToString(null) return a different value if you cast null?
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
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What is the difference between required and ng-required?
What is the difference between required and ng-required (form validation)?
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How to save a BufferedImage as a File
I am using the imgscalr Java library to resize an image .
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