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How do I rename all files to lowercase?
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answered Oct 16 '11 at 20:39
wjlwjl
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Virtualizing an ItemsControl?
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answered May 6 '10 at 20:25
DavidNDavidN
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How can I create a correlation matrix in R?
... between your matrix x and matrix y. Ex.:
set.seed(1)
x <- matrix(rnorm(20), nrow=5, ncol=4)
y <- matrix(rnorm(15), nrow=5, ncol=3)
COR <- cor(x,y)
COR
image(x=seq(dim(x)[2]), y=seq(dim(y)[2]), z=COR, xlab="x column", ylab="y column")
text(expand.grid(x=seq(dim(x)[2]), y=seq(dim(y)[2])), la...
Adding System.Web.Script reference in class library
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answered Jul 20 '09 at 22:31
M4NM4N
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Transpose a data frame
...he factor level.
– Harry Palmer
May 20 '13 at 13:46
add a comment
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Custom ListView click issue on items in Android
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edited Jan 20 '12 at 17:33
answered Oct 13 '09 at 20:53
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Initialize parent's protected members with initialization list (C++)
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edited Jun 20 at 9:12
Community♦
111 silver badge
answered Feb 18 '10 at 17:40
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Updating MySQL primary key
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answered Feb 26 '10 at 14:20
MartinMartin
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redis-py : What's the difference between StrictRedis() and Redis()?
...you need backwards compatibility? Use Redis. Don't care? Use StrictRedis.
2017-03-31
Here are the specifics of the backwards compatibility, from the github.com link cited:
In addition to the changes above, the Redis class, a subclass of StrictRedis, overrides several other commands to provide back...
Selecting with complex criteria from pandas.DataFrame
... B C
0 9 40 300
1 9 70 700
2 5 70 900
3 8 80 900
4 7 50 200
5 9 30 900
6 2 80 700
7 2 80 400
8 5 80 300
9 7 70 800
We can apply column operations and get boolean Series objects:
>>> df["B"] > 50
0 False
1 True
2 True
3 True
4 False
5...