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pandas GroupBy columns with NaN (missing) values
....1.0.dev0+2004.g8d10bfb6f'
# Example from the docs
df
a b c
0 1 2.0 3
1 1 NaN 4
2 2 1.0 3
3 1 2.0 2
# without NA (the default)
df.groupby('b').sum()
a c
b
1.0 2 3
2.0 2 5
# with NA
df.groupby('b', dropna=False).sum()
a c
b
1.0 2 3
2.0 2 5...
JPA CascadeType.ALL does not delete orphans
...ments
delete all child elements
delete main row
close session
With JPA 2.0, you can now use the option orphanRemoval = true
@OneToMany(mappedBy="foo", orphanRemoval=true)
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Format SQL in SQL Server Management Studio
... @Jordan: in Windows 10 the .Net Framework 3.5 SP1 (including .Net 2.0) is an optional feature of windows, that can be enabled in the "Turn Windows features on or off" screen/functionality. It's called ".NET Framework 3.5 (includes .NET 2.0 and 3.0)", and it's right at the top of the list of...
What does 'stale file handle' in Linux mean?
Say I have a terminal open, and through that terminal I have cd 'ed to some directory. Through another terminal, I delete that directory and restore it back from an identical backup. When I try to vim a file from the first terminal, in the same directory, why do I get an error about a stale file ...
Add 10 seconds to a Date
...onds" and the most voted answer is wrong.
– Philipp Gächter
Jun 23 '14 at 7:32
2
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Remove all elements contained in another array
...ound it, just awesome. Thank you very much!
– Tarvo Mäesepp
Sep 1 '19 at 18:58
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Sort a list by multiple attributes?
... return r #keep looping till you see a difference
return r
Lst = [(4, 2.0), (4, 0.01), (4, 0.9), (4, 0.999),(4, 0.2), (1, 2.0), (1, 0.01), (1, 0.9), (1, 0.999), (1, 0.2) ]
Lst.sort(lambda x,y:multi_attribute_sort(x,y)) #The Lambda of the Lambda
for rec in Lst: print str(rec)
Here's a way to r...
Can I keep Nuget on the jQuery 1.9.x/1.x path (instead of upgrading to 2.x)?
...the config change, an update should not upgrade your jQuery package to the 2.0 release. There have been issues in the past with the UI package manager not respecting the allowedVersions attribute (https://nuget.codeplex.com/workitem/1891), so you may have to use the command line if you encounter thi...
How to remove empty cells in UITableView? [duplicate]
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SWIFT 2.0 : self.tableView.tableFooterView = UIView(frame: CGRectZero)
– Nathaniel Blumer
Jan 27 '16 at 17:57
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How to detect Windows 64-bit platform with .NET?
In a .NET 2.0 C# application I use the following code to detect the operating system platform:
29 Answers
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