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Adding a user to a group in django
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How to toggle a boolean?
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
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pd.isnull(s)
Out[9]:
0 False
1 True
2 False
dtype: bool
The idea of using numpy.nan to represent missing values is something that pandas introduced, which is why pandas has the tools to deal with it.
Datetimes too (if you use pd.NaT you won't need to specify the dtype)
In [24]: s = ...
Get “Value” property in IGrouping
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Just a related tip - since, as the other answers have said, the grouping is an IEnumerable, if you need to access a specific index you can use group.ElementAt(i).
This is probably obvious to a lot of people but hopefully it will help a few!
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Redirect using AngularJS
...n the best that I can think is that you are calling the $location.path outside of the AngularJS digest.
Try doing this on the directive scope.$apply(function() { $location.path("/route"); });
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Overriding class constants vs properties
...answered Nov 28 '12 at 20:22
David FarrellDavid Farrell
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Remove file from the repository but keep it locally
...ge process. After that, a push will cause the files to be removed server-side.
– Walter Mundt
Aug 12 '10 at 16:38
7
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Setting transparent images background in IrfanView
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New lines inside paragraph in README.md
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Using sed, how do you print the first 'N' characters of a line?
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