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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...
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]
...
SWIFT 2.0 : self.tableView.tableFooterView = UIView(frame: CGRectZero)
– Nathaniel Blumer
Jan 27 '16 at 17:57
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Multiprocessing: How to use Pool.map on a function defined in a class?
...or p in proc]
return [p.recv() for (p, c) in pipe]
if __name__ == '__main__':
print parmap(lambda x: x**x, range(1, 5))
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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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Defeating a Poker Bot
...
classify rogue cheating or robotic
players.
Back when online poker was a fairly
new entity, there was rumour and talk with limited evidence that
some poker client software
screen-shots of suspicious players
desktops to see if they were running
programs that assist them. However (even if this were ...
Is there an easy way to check the .NET Framework version?
...ed to know if it's version 3.5 SP 1. Environment.Version() only returns 2.0.50727.3053 .
21 Answers
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