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Apply pandas function to column to create multiple new columns?
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Building off of user1827356 's answer, you can do the assignment in one pass using df.merge:
df.merge(df.textcol.apply(lambda s: pd.Series({'feature1':s+1, 'feature2':s-1})),
left_index=True, right_index=True)
textcol feature1 feature2
0 0.772692 1.772692 -0.227308
1 0.857210 ...
How do I rename all folders and files to lowercase on Linux?
...amp;& mv -T "${SRC}" "${DST}" || echo "${SRC} was not renamed"
fi
done
P.S.
The latter allows more flexibility with the move command (for example, "svn mv").
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Is there any simple way to find out unused strings in Android project?
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this one is not working as expected. I have tried with adding unused string and inspect, but it is not able to identify it
– chikka.anddev
Mar 14 '18 at 12:46
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How to filter logcat in Android Studio?
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Thanks for you answer. I had already tried the first one, but it doesn't filter out the non-relevant output. Re: the second option, unfortunatly I can't see the dropdown menu, what version are you using?
– Alessandro Roaro
Nov 14 '13 at 9:...
Case insensitive string as HashMap key
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One approach is to create a custom subclass of the Apache Commons AbstractHashedMap class, overriding the hash and isEqualKeys methods to perform case insensitive hashing and comparison of keys. (Note - I've never tried this...
Split data frame string column into multiple columns
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Thanks hadley, very convinient method, but there is one thing can be improved, if there is NA in the original column, after separation it will become sevaral empty string in result columns, which is unwanted, I want to keep the NA still NA after separation
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Convert a Map to a POJO
...r instance every time. It's expensive to create and thread-safe, so create one and cache it somewhere.
– glade
Feb 26 '17 at 23:06
1
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Can I use the range operator with if statement in Swift?
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@Sky: From the generated assembly code one can see that a library function func ~= (Range<A>, A) -> Bool is called. I would assume that this function works with O(1).
– Martin R
Jul 22 '14 at 17:43
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npm install errors with Error: ENOENT, chmod
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3 hours of frustration came down to one line in my .gitignore that was freaking out the npm install -g. Insane.
– bryan
Dec 2 '13 at 3:37
2
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Explain “claims-based authentication” to a 5-year-old
... the bartender should ask you for proof of age. How do you prove it? Well, one option is to have the bartender cut you in half and count the number of rings, but there could be some problems with that. The other option is for you to write down your birthday on a piece of paper to which the bartender...