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How to check whether a pandas DataFrame is empty?
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This seems like a shame, since you need to know that df is a pd.DataFrame. I'd like to know the motivation for not implementing bool() on pd.DataFrame.
– Quant
Feb 14 '14 at 16:55
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Edit the root commit in Git?
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As of Git version 1.7.12, you may now use
git rebase -i --root
Documentation
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Is floating-point math consistent in C#? Can it be?
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I know of no way to way to make normal floating points deterministic in .net. The JITter is allowed to create code that behaves differently on different platforms(or between different versions of .net). So using normal floats in...
How do I disable a Pylint warning?
...ts box, type:
--rcfile=C:\Python26\Lib\site-packages\pylint\standard.rc
Now it should work ...
You can also add a comment at the top of your code that will be interpreted by pylint:
# pylint: disable=C0321
link to all pylint message codes
Adding e.g. --disable-ids=C0321 in the argumen...
Where is Xcode's build folder?
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~/Library/Developer/Xcode/DerivedData is now the default.
You can set the prefs in Xcode to allow projects to specify their build directories.
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Detect if an element is visible with jQuery [duplicate]
...element on my page, but with two buttons, one for hide and one for show. I now want to have one button to toggle both .
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Devise - How do I forbid certain users from signing in?
...d self.is_active?
end
end
UPDATE
As Matt Huggins notes, the method is now called active_for_authentication? (Documentation)
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Can I mask an input text in a bat file?
...word will be in the passwd environment variable after the code has run.
Now, as mentioned, scriptpw.dll is available only up to XP/2003. In order to rectify this, you can simply copy the scriptpw.dll file from the Windows\System32 folder of an XP/2003 system to the Winnt\System32 or Windows\Syste...
“Large data” work flows using pandas
... store.append(g, frame, index=False, data_columns = v['dc'])
Now you have all of the tables in the file (actually you could store them in separate files if you wish, you would prob have to add the filename to the group_map, but probably this isn't necessary).
This is how you get colum...
throwing exceptions out of a destructor
...tic approximation of finally, see the various scope_guard implementations. Nowadays, with the machinery in place (even in the standard, is it C++14?) to detect whether the dtor is allowed to throw, it can even be made totally safe.
– Martin Ba
Dec 1 '15 at 11:0...