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How to see which plugins are making Vim slow?
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ZyXZyX
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Right way to reverse pandas.DataFrame?
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answered Dec 7 '13 at 17:24
behzad.nouribehzad.nouri
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Best way to turn an integer into a month name in c#?
...1) as well
– Jack0fshad0ws
Jan 12 '17 at 1:31
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npm install vs. update - what's the difference?
...2.1" // installs installs
"not-yet-installed-versioned-module": "2.7.8" // installs installs
}
}
Summary: The only big difference is that an already installed module with fuzzy versioning ...
gets ignored by npm install
gets updated by npm update
Additionally: install and update by...
Some questions about Automatic Reference Counting in iOS5 SDK
... compiler flag. ARC is supported in
Xcode 4.2 for Mac OS X v10.6 and v10.7
(64-bit applications) and for iOS 4
and iOS 5. (Weak references are not
supported in Mac OS X v10.6 and iOS
4). There is no ARC support in Xcode
4.1.
-
If I develop a new app for iOS 5 using
ARC, will ...
Is it possible to figure out the parameter type and return type of a lambda?
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answered Oct 30 '11 at 7:27
kennytmkennytm
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Working with Enums in android
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SpidySpidy
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Get position of UIView in respect to its superview's superview
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7 Answers
7
Active
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Pandas get topmost n records within each group
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1 0 1 1
1 1 2
2 3 2 1
4 2 2
3 7 3 1
4 8 4 1
(Keep in mind that you might need to order/sort before, depending on your data)
EDIT: As mentioned by the questioner, use df.groupby('id').head(2).reset_index(drop=True) to remove the multindex...