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Struct inheritance in C++
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answered Jun 11 '09 at 3:45
Suvesh PratapaSuvesh Pratapa
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Capture key press (or keydown) event on DIV element
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answered Jun 30 '10 at 12:56
hellehelle
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Git stash twice
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stash@{0}: WIP on dev: 1f6f8bb Commit message A
stash@{1}: WIP on master: 50cf63b Commit message B
If you made two stashes, then just call git stash pop twice. As opposed to git stash apply, pop applies and removes the latest stash.
You can also reference a specific stash, e.g.
git stash show s...
Calculating Pearson correlation and significance in Python
...ot entirely
reliable but are probably reasonable for datasets larger than 500 or so.
Parameters
----------
x : 1D array
y : 1D array the same length as x
Returns
-------
(Pearson's correlation coefficient,
2-tailed p-value)
References
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http://www.statsoft.com/textbook/glosp...
How do I make a transparent canvas in html5?
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Lee Taylor
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answered Jan 27 '11 at 10:35
OmiodOmiod
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Read a zipped file as a pandas DataFrame
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Returning value from called function in a shell script
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5 Answers
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What's a standard way to do a no-op in python?
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answered Mar 27 '09 at 17:05
Brian R. BondyBrian R. Bondy
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What does .SD stand for in data.table in R
...=c(1,3), v=1:6)
setkey(DT, y)
DT
# x y v
# 1: a 1 1
# 2: b 1 3
# 3: c 1 5
# 4: a 3 2
# 5: b 3 4
# 6: c 3 6
Doing this may help you see what .SD is:
DT[ , .SD[ , paste(x, v, sep="", collapse="_")], by=y]
# y V1
# 1: 1 a1_b3_c5
# 2: 3 a2_b4_c6
Basically, the by=y statement breaks the ...