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What does .SD stand for in data.table in R
...re available to j. For generic access they're wrapped up in .BY too. FAQ 2.10 has some history on it, but some clarity could be added to ?data.table. Great, docu help would be very welcome. Even better if you'd like to join project and change directly.
– Matt Dowle
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How to check if an object is nullable?
... <= 14:34)
– Marc Gravell♦
Mar 10 '12 at 23:56
1
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Get the Row(s) which have the max count in groups using groupby
... 2
2 MM1 S3 cb 5
3 MM2 S3 mk 8
4 MM2 S4 bg 10
5 MM2 S4 dgd 1
6 MM4 S2 rd 2
7 MM4 S2 cb 2
8 MM4 S2 uyi 7
In [2]: df.groupby(['Mt'], sort=False)['count'].max()
Out[2]:
Mt
S1 3
S3 8
S4 10
S2 7
Name: count
To get the...
Android image caching
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answered Oct 8 '10 at 20:08
edrowlandedrowland
1,77911 gold badge1010 silver badges22 bronze badges
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How to handle Handler messages when activity/fragment is paused
... Sufian
5,7071313 gold badges5454 silver badges108108 bronze badges
answered Nov 14 '11 at 14:09
quickdraw mcgrawquickdraw mcgraw
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How to remove outliers from a dataset
...[2] + H)] <- NA
y
}
To see it in action:
set.seed(1)
x <- rnorm(100)
x <- c(-10, x, 10)
y <- remove_outliers(x)
## png()
par(mfrow = c(1, 2))
boxplot(x)
boxplot(y)
## dev.off()
And once again, you should never do this on your own, outliers are just meant to be! =)
EDIT: I added n...
Handling very large numbers in Python
... integers, up to 4,294,967,295 digits, meaning they can easily hold φ**(4*10**6), which is "only" 832,951 digits. However, φ is not an integer, so you will need to use a Decimal (Python's floating-point bignum) to calculate the number. You can store the result in a long afterward, however.
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Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
...reas this question is about the setter methods
– user102008
Feb 16 '11 at 2:22
1
What do you mean...
Git for Windows - The Program can't start because libiconv2.dll is missing
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104
Work around from this thread: http://groups.google.com/forum/#!topic/msysgit/twrVn_EbNI4
cd...
right click context menu for datagridview
...tems?
– Alpha Gabriel V. Timbol
Apr 10 '16 at 11:49
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