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How to get the last N rows of a pandas DataFrame?
I have pandas dataframe df1 and df2 (df1 is vanila dataframe, df2 is indexed by 'STK_ID' & 'RPT_Date') :
3 Answers
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What's the state of the art in email validation for Rails?
What are you using to validate users' email addresses, and why?
13 Answers
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NumPy: function for simultaneous max() and min()
numpy.amax() will find the max value in an array, and numpy.amin() does the same for the min value. If I want to find both max and min, I have to call both functions, which requires passing over the (very big) array twice, which seems slow.
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What's a concise way to check that environment variables are set in a Unix shell script?
...(an empty string) is OK — not exactly what you want, but the alternative and older notation.
The second variant (using :?) requires DEST to be set and non-empty.
If you supply no message, the shell provides a default message.
The ${var?} construct is portable back to Version 7 UNIX and the Bourne ...
Shorten string without cutting words in JavaScript
I'm not very good with string manipulation in JavaScript, and I was wondering how you would go about shortening a string without cutting any word off. I know how to use substring, but not indexOf or anything really well.
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What is the Python equivalent for a case/switch statement? [duplicate]
...l-through, couldn't you use options.get(num, default)(), or am I misunderstanding?
– Zaz
Sep 24 '15 at 0:24
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Python initializing a list of lists [duplicate]
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I've just been struggling with the same problem and my brain was nearly blown away. Your answer really helped me.
– ForceBru
Sep 16 '15 at 18:25
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When to use virtual destructors?
I have a solid understanding of most OOP theory but the one thing that confuses me a lot is virtual destructors.
17 Answe...
How to generate a random string in Ruby
I'm currently generating an 8-character pseudo-random uppercase string for "A" .. "Z":
50 Answers
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How to get the nvidia driver version from the command line?
For debugging CUDA code and checking compatibilities I need to find out what nvidia driver version for the GPU I have installed. I found How to get the cuda version? but that does not help me here.
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